Science.gov

Sample records for 92-500 section 316b

  1. Comparing Clean Water Act Section 316(b) policy options.

    PubMed

    Kadvany, John

    2002-05-01

    This paper develops a comparative framework for policy proposals involving fish protection and Section 316(b) of the Clean Water Act (CWA). Section 316(b) addresses the impingement and entrainment of fish by cooling-water intake structures used principally by steam electric power plants. The framework is motivated by examining the role of adverse environmental impacts (AEIs) in the context of Section 316(b) decision making. AEI is mentioned in Section 316(b), but not defined. While various AEI options have been proposed over the years, none has been formalized through environmental regulations nor universally accepted. Using a multiple values approach from decision analysis, AEIs are characterized as measurement criteria for ecological impacts. Criteria for evaluating AEI options are identified, including modeling and assessment issues, the characterization of ecological value, regulatory implementation, and the treatment of uncertainty. Motivated by the difficulties in defining AEI once and for all, a framework is introduced to compare options for 316(b) decision making. Three simplified policy options are considered, each with a different implicit or explicit AEI approach: (1) a technology-driven rule based on a strict reading of the 316(b) regulatory text, and for which any impingement and entrainment count as AEI, (2) a complementary, open-ended risk-assessment process for estimating population effects with AEI characterized on a site-specific basis, and (3) an intermediate position based on proxy measures such as specially constructed definitions of littoral zone, sensitive habitat, or water body type. The first two proposals correspond roughly to responses provided, respectively, by the Riverkeeper environmental organization and the Utility Water Act Group to the U.S. Environmental Protection Agency (EPA)'s proposed 316(b) new facilities rule of August 2000; the third example is a simplified form of the EPA's proposed August 2000 new facilities rule itself

  2. Use of equivalent loss models under Section 316(b) of the Clean Water Act.

    PubMed

    Dey, William

    2002-06-13

    Equivalent loss models encompass a variety of life table-based approaches that can be used to convert age- and life stage-specific estimates of entrainment and impingement loss to a common, easily understood currency. This common currency can be expressed in terms of numbers of individuals, yield to the fishery, or biomass to the ecosystem. These models have at least two key uses in the Section 316(b) assessment process: screening for adverse environmental impact (AEI) and determination of environmental benefits associated with intake alternatives. This paper reviews the various forms of equivalent loss models, their data input requirements, and their assumptions and limitations. In addition, it describes how these models can be used as a second-level screening tool as part of the assessment of the potential for AEI. Given their relative simplicity and ease of use, equivalent loss models should prove to be an important tool in the arsenal of impact assessment methods for Section 316(b). PMID:12805898

  3. A holistic look at minimizing adverse environmental impact under Section 316(b) of the Clean Water Act.

    PubMed

    Veil, John A; Puder, Markus G; Littleton, Debra J; Johnson, Nancy

    2002-04-18

    Section 316(b) of the Clean Water Act (CWA) requires that "the location, design, construction, and capacity of cooling water intake structures reflect the best technology available for minimizing adverse environmental impact." As the U.S. Environmental Protection Agency (EPA) develops new regulations to implement Section 316(b), much of the debate has centered on adverse impingement and entrainment impacts of cooling-water intake structures. Depending on the specific location and intake layout, once-through cooling systems withdrawing many millions of gallons of water per day can, to a varying degree, harm fish and other aquatic organisms in the water bodies from which the cooling water is withdrawn. Therefore, opponents of once-through cooling systems have encouraged the EPA to require wet or dry cooling tower systems as the best technology available (BTA), without considering site-specific conditions. However, within the context of the broader scope of the CWA mandate, this focus seems too narrow. Therefore, this article examines the phrase "minimizing adverse environmental impact" in a holistic light. Emphasis is placed on the analysis of the terms "environmental" and "minimizing." Congress chose "environmental" in lieu of other more narrowly focused terms like "impingement and entrainment," "water quality," or "aquatic life." In this light, BTA for cooling-water intake structures must minimize the entire suite of environmental impacts, as opposed to just those associated with impingement and entrainment. Wet and dry cooling tower systems work well to minimize entrainment and impingement, but they introduce other equally important impacts because they impose an energy penalty on the power output of the generating unit. The energy penalty results from a reduction in plant operating efficiency and an increase in internal power consumption. As a consequence of the energy penalty, power companies must generate additional electricity to achieve the same net output

  4. A Holistic Look at Minimizing Adverse Environmental Impact Under Section 316(b) of the Clean Water Act

    DOE PAGESBeta

    Veil, John A.; Puder, Markus G.; Littleton, Debra J.; Johnson, Nancy

    2002-01-01

    Section 316(b) of the Clean Water Act (CWA) requires that “the location, design, construction, and capacity of cooling water intake structures reflect the best technology available for minimizing adverse environmental impact.” As the U.S. Environmental Protection Agency (EPA) develops new regulations to implement Section 316(b), much of the debate has centered on adverse impingement and entrainment impacts of cooling-water intake structures. Depending on the specific location and intake layout, once-through cooling systems withdrawing many millions of gallons of water per day can, to a varying degree, harm fish and other aquatic organisms in the water bodies from which the coolingmore » water is withdrawn. Therefore, opponents of once-through cooling systems have encouraged the EPA to require wet or dry cooling tower systems as the best technology available (BTA), without considering site-specific conditions. However, within the context of the broader scope of the CWA mandate, this focus seems too narrow. Therefore, this article examines the phrase “minimizing adverse environmental impact” in a holistic light. Emphasis is placed on the analysis of the terms “environmental” and “minimizing.” Congress chose “environmental” in lieu of other more narrowly focused terms like “impingement and entrainment,” “water quality,” or “aquatic life.” In this light, BTA for cooling-water intake structures must minimize the entire suite of environmental impacts, as opposed to just those associated with impingement and entrainment. Wet and dry cooling tower systems work well to minimize entrainment and impingement, but they introduce other equally important impacts because they impose an energy penalty on the power output of the generating unit. The energy penalty results from a reduction in plant operating efficiency and an increase in internal power consumption. As a consequence of the energy penalty, power companies must generate additional

  5. 24 CFR 92.500 - The HOME Investment Trust Fund.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 24 Housing and Urban Development 1 2011-04-01 2011-04-01 false The HOME Investment Trust Fund. 92... Urban Development HOME INVESTMENT PARTNERSHIPS PROGRAM Program Administration § 92.500 The HOME Investment Trust Fund. (a) General. A HOME Investment Trust Fund consists of the accounts described in...

  6. 24 CFR 92.500 - The HOME Investment Trust Fund.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false The HOME Investment Trust Fund. 92... Urban Development HOME INVESTMENT PARTNERSHIPS PROGRAM Program Administration § 92.500 The HOME Investment Trust Fund. (a) General. A HOME Investment Trust Fund consists of the accounts described in...

  7. 24 CFR 92.500 - The HOME Investment Trust Fund.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 24 Housing and Urban Development 1 2012-04-01 2012-04-01 false The HOME Investment Trust Fund. 92... Urban Development HOME INVESTMENT PARTNERSHIPS PROGRAM Program Administration § 92.500 The HOME Investment Trust Fund. (a) General. A HOME Investment Trust Fund consists of the accounts described in...

  8. 24 CFR 92.500 - The HOME Investment Trust Fund.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 24 Housing and Urban Development 1 2013-04-01 2013-04-01 false The HOME Investment Trust Fund. 92... Urban Development HOME INVESTMENT PARTNERSHIPS PROGRAM Program Administration § 92.500 The HOME Investment Trust Fund. (a) General. A HOME Investment Trust Fund consists of the accounts described in...

  9. 24 CFR 92.500 - The HOME Investment Trust Fund.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 24 Housing and Urban Development 1 2014-04-01 2014-04-01 false The HOME Investment Trust Fund. 92... Urban Development HOME INVESTMENT PARTNERSHIPS PROGRAM Program Administration § 92.500 The HOME Investment Trust Fund. (a) General. A HOME Investment Trust Fund consists of the accounts described in...

  10. Approach to ecological assessment of power-plant-intake (316b) related issues: the Prairie Island case

    SciTech Connect

    Adams, S.M.; Vaughan, D.S.; Hildebrand, S.G.; Kumar, K.D.

    1981-04-01

    Assessment approaches and strategies useful in addressing important issues in section 316(b) of the 1972 Federal Water Pollution Control Act are illustrated in this report through the analysis and evaluation of the Prairie Island Nuclear Station 316(b) data base. The main issues in 316(b) demonstrations, cooling water intake operation and location, involve determining the impacts of entrainment and impingement. Entrainment impacts were addressed by applying the equivalent adult approach and correcting for inherent biases and by determining the through-plant survival of zooplankton. An assessment of impingement impacts was made by comparing for each of various species the number of fish impinged to estimates of population size. Densities of plankton and fish were compared between the intake area and an alternate area to determine if the location of the present intake minimizes impacts. No definitive conclusion relative to the best location of the intake could be made because of high year to year variability in the data and the differential dominance of trophic groups between areas.

  11. An Analysis of Citizen Participation Programs Relating to the Federal Water Pollution Control Act Amendments of 1972 (P.L. 92-500): Case Studies of the Washington County Project; State of Wisconsin; and Dane County, Wisconsin Programs.

    ERIC Educational Resources Information Center

    Salmon, Elizabeth E.

    The thesis, which presents an analysis of three Wisconsin citizen participation programs relating to the Federal Water Pollution Control Act Amendments of 1972 (Public Law 92-500), has identified the adult education role in teaching and applying skills, promoting growth in governmental understanding, assisting in public planning and…

  12. Cesarean Section

    MedlinePlus

    A Cesarean section (C-section) is surgery to deliver a baby. The baby is taken out through the mother's abdomen. In the United ... four women have their babies this way. Most C-sections are done when unexpected problems happen during ...

  13. Cesarean Section

    MedlinePlus

    A Cesarean section (C-section) is surgery to deliver a baby. The baby is taken out through the mother's abdomen. In the United ... three women has their babies this way. Some C-sections are planned, but many are done when ...

  14. Cesarean section

    MedlinePlus Videos and Cool Tools

    ... disease Like many surgical procedures, cesarean sections require anesthesia. Usually, the mother is given an epidural or ... with either of these incisions because of the anesthesia. The doctor will open the uterus and the ...

  15. Golden Sections

    ERIC Educational Resources Information Center

    Stuart, Stephen N.

    2006-01-01

    In this article, the author states that architects, musicians and other thoughtful people have, since the time of Pythagoras, been fascinated by various harmonious proportions. One, is the visual harmony attributed to Euclid, called "the golden section". He explores this concept in geometries of one, two and three dimensions. He added, that in…

  16. INTERIOR FROM WESTERN SECTION, THROUGH CENTRAL SECTION, TO EASTERN SECTION, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INTERIOR FROM WESTERN SECTION, THROUGH CENTRAL SECTION, TO EASTERN SECTION, VIEW FACING NORTHEAST. - Naval Air Station Barbers Point, Aircraft Storehouse, Between Midway & Card Streets at Enterprise Avenue intersection, Ewa, Honolulu County, HI

  17. Floor Plans: Section "AA", Section "BB"; Floor Framing Plans: Section ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Floor Plans: Section "A-A", Section "B-B"; Floor Framing Plans: Section "A-A", Section "B-B" - Fort Washington, Fort Washington Light, Northeast side of Potomac River at Fort Washington Park, Fort Washington, Prince George's County, MD

  18. INFORMATION SOURCE ON COOLING WATER INTAKE

    EPA Science Inventory

    Resource Purpose:Supports the technical and financial analysis for the cooling water intake structure rule under Section 316(b) of the CWA.
    Legislation/Enabling Authority:Section 308
    Supported Program:Water permits - implementation of Section 316(b) of ...

  19. Outdoor heat exchanger section

    SciTech Connect

    Kessler, A.F.; Smiley, W.A. III; Wendt, M.E.

    1988-02-09

    An outdoor section for an air conditioning system is described comprising: a compressor; a heat exchanger; a cabinet having an upper cabinet section, a lower cabinet section and a louvered lower section top cover, the heat exchanger and the compressor being housed in the lower cabinet section and the upper cabinet section having a solid top which overlies the louvers in the lower section top cover; and a fan disposed in the lower cabinet section to draw air through the sides of the lower cabinet section and through the heat exchanger housed therein, the fan discharging air, after having been drawn through the heat exchanger, upward through the louvers in the lower cabinet section top cover and into the interior of the upper cabinet section.

  20. Delivery by Cesarean Section

    MedlinePlus

    ... Español Text Size Email Print Share Delivery by Cesarean Section Page Content Article Body More than one mother in three gives birth by Cesarean section in the United States (it is also called ...

  1. Ureilite Thin Section Preparation

    NASA Technical Reports Server (NTRS)

    Harrington, R.; Righter, K.

    2014-01-01

    Preparing thin and thick sections of ureilite type meteorites is a challenge that can confound even the most experienced section preparer. A common characteristic of these samples is the presence of carbon phases, particularly nanodiamonds, in the matrix along silicate grain boundaries, fractures, and cleavage plains [1]. The extreme hardness of the nanodiamonds presents a challenge to the section preparer in the form of high surface relief on the section. This hard material also causes considerable wear and tear on equipment and materials that are used for making the sections. These issues will be discussed and potentially helpful measures will be presented.

  2. Sectional device handling tool

    DOEpatents

    Candee, Clark B.

    1988-07-12

    Apparatus for remotely handling a device in an irradiated underwater environment includes a plurality of tubular sections interconnected end-to-end to form a handling structure, the bottom section being adapted for connection to the device. A support section is connected to the top tubular section and is adapted to be suspended from an overhead crane. Each section is flanged at its opposite ends. Axially retractable bolts in each bottom flange are threadedly engageable with holes in the top flange of an adjacent section, each bolt being biased to its retracted position and retained in place on the bottom flange. Guide pins on each top flange cooperate with mating holes on adjacent bottom flanges to guide movement of the parts to the proper interconnection orientation. Each section carries two hydraulic line segments provided with quick-connect/disconnect fittings at their opposite ends for connection to the segments of adjacent tubular sections upon interconnection thereof to form control lines which are connectable to the device and to an associated control console.

  3. Bylaws for GP Section

    NASA Astrophysics Data System (ADS)

    Individual sections of AGU are governed by collections of bylaws adopted by each membership. The GP Section, at the present time, has no bylaws. Such a document would include articles defining the name, objectives, and membership of the section. Also present would be a description of officers (president, president-elect, and secretary), their duties, nomination and election procedures, and information on committees, meetings, and publications. The GP Section now functions by following some standard, although unwritten, procedures. The usual bylaws used by AGU sections would not change any of the functions or procedures used by our section but would put in writing the structure that we follow. It is possible, in the membership clause, to allow members to be affiliated with more than one section and to no longer claim only a “primary” section. The GP Executive Committee intends to discuss the possibility of adopting our own bylaws at the spring business meeting. We would appreciate any input from GP membership on this topic prior to May. Please direct your comments to Laurie Brown or Subir Banerjee (addresses above).

  4. Jet inclusive cross sections

    SciTech Connect

    Del Duca, V.

    1992-11-01

    Minijet production in jet inclusive cross sections at hadron colliders, with large rapidity intervals between the tagged jets, is evaluated by using the BFKL pomeron. We describe the jet inclusive cross section for an arbitrary number of tagged jets, and show that it behaves like a system of coupled pomerons.

  5. Cesarean Section Birth

    MedlinePlus

    ... try not to do elective deliveries before 39 weeks, which is a week before the patient's due date. And the reason ... cesarean section is typically done anywhere from 39 weeks to the patient's due date. Right. Thank you. ...

  6. Utility straight sections

    SciTech Connect

    Leemann, B.; Peggs, S.; Peterson, J.

    1985-10-01

    Utility straight sections are insertions in the SSC lattice to provide relatively free space to facilitate various beam manipulations. These uses include beam-abort, injection (and conceivably ejection), space for the rf system, and collimation. A typical utility straight section is 1500 meters in overall length (ranging from 500 to 1200 meters). It has zero dispersion and high values of the beta functions. The betatron phase shift across the insertion is about 90{degrees} in each plane.

  7. [Emergency cesarean section].

    PubMed

    Kawano, Shoko; Amano, Kan; Unno, Nobuya; Okutomi, Toshiyuki

    2012-09-01

    There are abundant cases of obstetric emergencies demanding prompt intervention. Emergency cesarean sections are classified into stable, urgent and immediate surgeries, although there is significant overlap between three groups. Stable emergency cesarean sections are performed in patients with stable maternal and fetal physiology, but who need surgery before unstability occurs. Urgent cesarean sections refer to situations in which maternal and/or fetal physiology is unstable, whereas the immediate cesarean section is used for life-threatening condition such as sustained fetal bradycardia, maternal cardiopulmonary arrest. In most cases the key to proper management is the prompt communication between obstetricians and anesthesiologists. Anesthesiologists must have a clear understanding of certain obstetric emergencies. In the event of sustained fetal bradycardia caused by placental abruption, cord prolapse, uterine rupture etc, delivery by immediate cesarean section within 25 minutes improve long-term neonatal neurologic outcome. Although cardiopulmonary arrest in pregnancy is very uncommon, peripartum cesarean section should be considered within 5 minutes not only for maternal resuscitation but for neonatal survival. Only a well-coordinated teamwork of all involved specialities will guarantee optimal prognosis of mother and fetus. PMID:23012828

  8. Section workshop, field trips

    NASA Astrophysics Data System (ADS)

    McKnight, Diane

    The formation of a new Membership Committee to strengthen recruitment of members to the Biogeosciences Section was one of the outcomes of the “Biogeosciences on the Threshold” workshop held March 23-25, 2001. Eighteen biogeoscientists gathered near Baltimore, Maryland, to discuss future research themes, as well as the direction and structure of the new section.The Membership Committee is chaired by Max Holmes and will coordinate with AGU staff in recruiting scientists from the biogeosciences to join AGU. If you are interested in being involved in recruitment or have suggestions for groups to contact, please get in touch with Max Holmes (rholmes@mbl.edu).

  9. Roof Plans: Section "CC", Roof Plan; Roof Framing Plans: Section ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Roof Plans: Section "C-C", Roof Plan; Roof Framing Plans: Section "C-C", Section "D-D"; Roof Framing Sections: Cross Section "G-G", Cross Section "H-H" - Fort Washington, Fort Washington Light, Northeast side of Potomac River at Fort Washington Park, Fort Washington, Prince George's County, MD

  10. Cross Sections: No. 1 Hold section at Fr 24 Looking ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Cross Sections: No. 1 Hold section at Fr 24 Looking Fwd, No 1 Hold Section at Fr 28 Looking Aft, No 2 Hold Section at Fr 48 Looking Aft, No 3 Hold Section at Fr 70 Looking Aft, No 4 Hold Section at Fr 90 Looking Aft - General John Pope, Suisun Bay Reserve Fleet, Benicia, Solano County, CA

  11. Special Summer Section.

    ERIC Educational Resources Information Center

    G/C/T, 1981

    1981-01-01

    The section on summer programs for the gifted includes a directory of 62 programs and eight brief articles on independent learning; Project IDEA, a psychomotor program; miscellaneous offerings; The College Academy, Framingham College, MA; The College for Kids Project, IL; environmental education; an animal behavior course; and a summer academy.…

  12. [Cesarean section through history].

    PubMed

    Rabinerson, David; Ashwal, Eran; Gabbay-Benziv, Rinat

    2014-11-01

    According to historic documents, delivery by abdominal and uterine incision was already known to mankind at the beginning of the second millennium BC. This delivery method was eventually referred to as "Cesarean Section" because it was wrongfully attributed to the way by which Julius Caesar was born. The indications for cesarean sections performed in ancient cultures and to the end of the medieval period were mainly kings law, that mandated burial of the fetus separately from his mother, legal rights regarding inheritance of the father or religious motives mandating baptism of the newborn in order to ensure him eternal life in heaven. As from the second half of the 19th century AD, and with improvement in surgical techniques, as well as in the perioperative environment (asepsis, antibiotics, anaesthesia, blood transfusion, etc.), the obstetric outcome of cesarean sections was dramaticay improved, both in terms of maternal, as well as fetal, outcome. Hence, it became very prevalent throughout the world. The emergence of medico-legal medicine and medical ethics issues, have further contributed to the use of cesarean sections as the ultimate solution of every unusual delivery. PMID:25563029

  13. Solanum section Petota

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Solanum section Petota includes the cultivated potato and its approximately 110 wild species relatives. This monographic treatment covers the 18 wild potato species that occur in Argentina. It includes keys to these 18 species, full synonymies with lectotypifications when necessary, descriptions, st...

  14. The Golden Section.

    ERIC Educational Resources Information Center

    Runion, Garth E.

    The Golden Section, also known as the "Golden Mean" and the "Divine Proportion," is a ratio found in art and nature that has mathematical properties. This book explores these geometric and algebraic properties in a variety of activities. Construction problems, designs using the pentagon and pentagram, and opportunities to work through proofs are…

  15. Transpacific section planned

    NASA Astrophysics Data System (ADS)

    Swift, James

    1984-04-01

    A transpacific section across the subpolar gyre near latitude 47°N is planned for September-October 1985. This complements the 24.5°N section planned for March-May 1985. The purpose of the expedition is to determine the western boundary current structure, to determine the meridional flow in the region of the Emperor Seamounts, to measure the transport of heat by ocean currents, to determine the net transport of water masses and estimate the meridional general circulation of the north Pacific, and to improve the mapping of tracer distributions in the deep north Pacific.Approximately 110 surface-to-bottom conductivity, temperature, and depth (CTD) rosette stations across the width of the ocean will be occupied, with maximum station spacing of 80 km over abyssal plains, closing to 30-50 km over rough topography and boundaries. Water samples will be collected and analyzed on board for salinity, oxygen, and nutrients.

  16. Cross Sections: No 6 Hold Section at Fr 178 Looking ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Cross Sections: No 6 Hold Section at Fr 178 Looking Fwd, No 7 Hold Section at No 154 Looking Fwd, No 7 Hold Section at Fr 195 Looking Fwd Showing Trans 194, No 7 Hold Section at Fr 198 Looking Fwd - General John Pope, Suisun Bay Reserve Fleet, Benicia, Solano County, CA

  17. Perimortem caesarean section.

    PubMed

    Parry, Richard; Asmussen, Tilo; Smith, Jason E

    2016-03-01

    This review describes a simple approach to perimortem caesarean section (PMCS) that can be used by a doctor in the resuscitation room or prehospital environment when faced with a mother of more than 20 weeks gestation in cardiac arrest. It explores the indications for and contraindications to the procedure, the physiological rationale behind it, equipment needed, technical aspects of the procedure and reviews recent literature on maternal and fetal outcomes. Like other uncommon procedures such as emergency department thoracotomy, rehearsal and preparation for a PMCS is essential to give both mother and baby the best chance of survival. PMID:25714106

  18. Pheochromocytoma after Cesarean Section

    PubMed Central

    Naghshineh, Elham; Shahraki, Azar Danesh; Sheikhalian, Somaye; Hashemi, Leila

    2016-01-01

    Pheochromocytoma is a catecholamine-producing tumor. There are a very few reported cases of clinical pheochromocytoma. Here, we report a 27-year-old woman para 1 live 1 with chief complaint of headache, confusion, nausea, and vomiting 2 days after cesarean section. She was anxious and had palpitation. On physical examination, fever, tachycardia, tachypnea, high blood pressure, and right thyroid nodule were found. She was managed as pregnancy-induced hypertension at first. In laboratory data, epinephrine, norepinephrine, metanephrine, normetanephrine, and vanillylmandelic acid were increased in 24 h urine collection. An adrenal mass was detected in abdominal computed tomography. Regarding clinical and paraclinical findings, pheochromocytoma was diagnosed. The patient received medical treatment, but it was not effective; hence, she underwent adrenalectomy. PMID:27076898

  19. Trans-Pacific Section

    NASA Astrophysics Data System (ADS)

    A trans-Pacific section along latitude 24.5°N is planned for 1985, with the field program tentatively scheduled for April 17 to June 27. The purpose of the expedition is to measure the transport of heat by ocean currents, to determine the net transport of water masses and estimate the meridional general circulation of the North Pacific, and to improve the mapping of tracer distributions in the deep North Pacific.Approximately 200 surface-to-bottom CTD/rosette stations will be occupied across the width of the ocean, with maximum station spacing of 80 km over abyssal plains, closing to 30-50 km over rough topography and boundaries. Water samples will be collected and analyzed on board for salinity, oxygen, and nutrients.

  20. Radiation and photochemistry section

    SciTech Connect

    Not Available

    1991-01-01

    The highlights of this past year in the Radiation and Photochemistry Section at Argonne include: (1) picosecond optical studies of radical cations and excited states produced in hydrocarbon radiolysis provided the first kinetic measurements of ion transformation and production of triplet and singlet excited states by ion recombination. (2) studies of radical cations of alkyl-substituted amines and sulfides provided insights into ion-molecule reactions of radical cations in the condensed phase. (3) studies of the behavior of strained alkane radical cations, such as cubane {sup +}{center dot}, revealed new rearrangements and remarkable, medium-dependent differences in their structures. (4) H{center dot}atom reactions yielding e{sub aq}{sup {minus}} provided the first reliable measurements of hydrated-electron enthalpy and entropy and forced the revision of some previous thinking about the driving force in {sub aq}{sup {minus}} reactions.

  1. Section AA Pre2004 Fire, Section AA 2009, Section AA, South ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Section A-A Pre-2004 Fire, Section A-A 2009, Section A-A, South Elevation - Boston & Maine Railroad, Berlin Branch Bridge #148.81, Formerly spanning Moose Brook at former Boston & Maine Railroad, Gorham, Coos County, NH

  2. Industrial Section Convenor's Report

    NASA Astrophysics Data System (ADS)

    Barone, M.; Riboni, P.

    2002-11-01

    recently into the areas of interest of our community (Hourdakis and Intrasoft) and the examples of an Industry historically committed to a strong R&D effort (SAES-Getters). Finally a case of involvement of industry in a "Big Science" project (CMS) completed the palette of the contributions to this Industry Section. The full set of transparencies of the lectures, are filed and made available at the conference site: .

  3. Section BB, Section DD, Plan AA, Plan CC, Typical Framing ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Section B-B, Section D-D, Plan A-A, Plan C-C, Typical Framing Detail of Upper Stringers, Typical Framing Detail of Lower Stringers - Covered Bridge, Spanning Connecticut River, Orford, Grafton County, NH

  4. 3. View of corner connecting log section to north section ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. View of corner connecting log section to north section of building. LOOKING SOUTHEAST. - Department of Energy, Grand Junction Office, Building No. 12, 2597 B3/4 Road, Grand Junction, Mesa County, CO

  5. SECTION O, SHOWING FLAT MARKERS, WITH SECTIONS K AND L ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    SECTION O, SHOWING FLAT MARKERS, WITH SECTIONS K AND L IN BACKGROUND. VIEW TO SOUTH. - Rock Island National Cemetery, Rock Island Arsenal, 0.25 mile north of southern tip of Rock Island, Rock Island, Rock Island County, IL

  6. 13. VIEW WEST, STREET LEVEL, OF EAST MAIN SECTION SECTION, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. VIEW WEST, STREET LEVEL, OF EAST MAIN SECTION SECTION, SHOWING HISTORICAL MARKER THAT READS 'Y-BRIDGE - 1902 - WORLD FAMOUS PART OF THE OLD NATIONAL ROAD' - Y-Bridge, Spanning confluence of Muskingham & Licking Rivers, Zanesville, Muskingum County, OH

  7. 30. Part of South Elevation / Section CC / Section ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    30. Part of South Elevation / Section CC / Section BB / Elevation of Skylight (drawing 7) - Whittier State School, Hospital & Receiving Building, 11850 East Whittier Boulevard, Whittier, Los Angeles County, CA

  8. 7 CFR 3200.3 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 532 of the Equity in Educational Land-Grant Status Act of 1994 (7 U.S.C. 301 note). (c) Hispanic-serving institutions—institutions of higher education as defined in section 316(b) of the Higher...

  9. Intervention for Postpartum Infections Following Caesarean Section

    ClinicalTrials.gov

    2015-04-20

    Surgical Wound Infection; Infection; Cesarean Section; Cesarean Section; Dehiscence; Complications; Cesarean Section; Complications; Cesarean Section, Wound, Dehiscence; Wound; Rupture, Surgery, Cesarean Section

  10. Controlling Works, Section AA at Bear Trap Dam, Section BB ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Controlling Works, Section A-A at Bear Trap Dam, Section B-B at Bear-Trap Dam, Section C-C at Sluice Gate - Chicago Sanitary and Ship Canal, Lockport Controlling Works, Illinois Waterway River Mile 293.2, Lockport, Will County, IL

  11. 4. Interior detail original 1906 section and middle 1911 section. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. Interior detail original 1906 section and middle 1911 section. Middle section beyond arched doorway. View to east. - Duluth & Iron Range Rail Road Company Shops, Oil House, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  12. C-section - series (image)

    MedlinePlus

    ... anesthesia, which renders the patient unconscious, for emergency C-sections because it can be administered quickly and takes effect almost immediately. When the C-section is planned, the doctor may order regional ...

  13. Activities: Sectioning a Regular Tetrahedron.

    ERIC Educational Resources Information Center

    Maletsky, Evan M., Ed.; And Others

    1980-01-01

    Worksheets are provided for use by students in grades 8 and above when sectioning a tetrahedron. Lesson objectives include the discovery of generalizations regarding the cross-sections of a tetrahedron. (MK)

  14. 14 CFR Section 4 - General

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... UNIFORM SYSTEM OF ACCOUNTS AND REPORTS FOR LARGE CERTIFICATED AIR CARRIERS Balance Sheet Classifications Section 4 General (a) The balance sheet accounts are designed to show the financial condition of the air... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false General Section 4 Section 4 Aeronautics...

  15. 14 CFR Section 4 - General

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... UNIFORM SYSTEM OF ACCOUNTS AND REPORTS FOR LARGE CERTIFICATED AIR CARRIERS Balance Sheet Classifications Section 4 General (a) The balance sheet accounts are designed to show the financial condition of the air... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false General Section 4 Section 4 Aeronautics...

  16. Compressive crippling of structural sections

    NASA Technical Reports Server (NTRS)

    Anderson, Melvin S

    1956-01-01

    A method is presented for calculating crippling stresses of structural sections as a function of material properties and the proportions of the section. The presence of formed or anisotropic material is accounted for by the use of an effective stress-strain curve. The method of analysis applies to many sections for which a procedure for calculating crippling was not previously available.

  17. 14 CFR Section 02 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Section 02 Section 02 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) ECONOMIC REGULATIONS UNIFORM SYSTEM OF ACCOUNTS AND REPORTS FOR LARGE CERTIFICATED AIR CARRIERS Section 02...

  18. Scheduling a C-Section

    MedlinePlus

    ... Labor & birth > Scheduling a c-section Scheduling a c-section E-mail to a friend Please fill ... develop before she’s born. Why can scheduling a c-section for non-medical reasons be a problem? ...

  19. 23. VIEW OF SECTION DRAWINGS. THE SECTION LINES CUT THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. VIEW OF SECTION DRAWINGS. THE SECTION LINES CUT THE BUILDING EAST-WEST. THE ORIGINAL DRAWING HAS BEEN ARCHIVED ON MICROFILM. THE DRAWING WAS REPRODUCED AT THE BEST QUALITY POSSIBLE. LETTERS AND NUMBERS IN THE CIRCLES INDICATE FOOTER AND/OR COLUMN LOCATIONS. - Rocky Flats Plant, Uranium Rolling & Forming Operations, Southeast section of plant, southeast quadrant of intersection of Central Avenue & Eighth Street, Golden, Jefferson County, CO

  20. 38. SECTIONS OF ACCESS CORRIDOR, INCLUDES SECTION SHOWING ARRANGEMENT OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    38. SECTIONS OF ACCESS CORRIDOR, INCLUDES SECTION SHOWING ARRANGEMENT OF NAVY GUN BARRELS. INEEL DRAWING NUMBER 200-0633-00-287-106454. FLUOR NUMBER 5775-CPP-633-P-59. - Idaho National Engineering Laboratory, Old Waste Calcining Facility, Scoville, Butte County, ID

  1. Director Circles of Conic Sections

    ERIC Educational Resources Information Center

    Srinivasan, V. K.

    2002-01-01

    Given a conic section, the locus of a moving point in the plane of the conic section such that the two tangent lines drawn to the conic section from the moving point are all mutually perpendicular is a curve. In the case of an ellipse and hyperbola this curve is a circle referred to as the director circle. In the case of the parabola this curve…

  2. Radar cross section of insects

    NASA Astrophysics Data System (ADS)

    Riley, J. R.

    1985-02-01

    X-band measurements of radar cross section as a function of the angle between insect body axis and the plane of polarization are presented. A finding of particular interest is that in larger insects, maximum cross section occurs when the E-vector is perpendicular to the body axis. A new range of measurements on small insects (aphids, and planthoppers) is also described, and a comprehensive summary of insect cross-section data at X-band is given.

  3. The total charm cross section

    SciTech Connect

    Vogt, R

    2007-09-14

    We assess the theoretical uncertainties on the total charm cross section. We discuss the importance of the quark mass, the scale choice and the parton densities on the estimate of the uncertainty. We conclude that the uncertainty on the total charm cross section is difficult to quantify.

  4. XCOM: Photon Cross Sections Database

    National Institute of Standards and Technology Data Gateway

    SRD 8 XCOM: Photon Cross Sections Database (Web, free access)   A web database is provided which can be used to calculate photon cross sections for scattering, photoelectric absorption and pair production, as well as total attenuation coefficients, for any element, compound or mixture (Z <= 100) at energies from 1 keV to 100 GeV.

  5. Evolution & the Cesarean Section Rate

    ERIC Educational Resources Information Center

    Walsh, Joseph A.

    2008-01-01

    "Nothing in biology makes sense except in the light of evolution." This was the title of an essay by geneticist Theodosius Dobzhansky writing in 1973. Many causes have been given for the increased Cesarean section rate in developed countries, but biologic evolution has not been one of them. The C-section rate will continue to rise, because the…

  6. 14 CFR Section 8 - General

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false General Section 8 Section 8 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) ECONOMIC REGULATIONS UNIFORM SYSTEM OF ACCOUNTS AND REPORTS FOR LARGE CERTIFICATED AIR CARRIERS Profit and Loss...

  7. Sectional impression tray and sectional denture for a microstomia patient.

    PubMed

    Colvenkar, Shreya S

    2010-02-01

    Microstomia presents a unique challenge to the patient. Patients with microstomia who must wear removable dental prostheses often face the difficulty of being unable to insert or remove the prosthesis because of the constricted opening of the oral cavity. A completely edentulous patient, who developed microstomia along with Raynaud's phenomenon induced by scleroderma, is presented. This clinical report describes a quick and easy method for fabrication of a sectional custom impression tray connected by press button and a sectional complete denture retained by magnets. A sectional denture that provides ease in placement and removal can be successfully used in clinical practice for treatment of microstomia patients. PMID:19895427

  8. 23. VIEW OF SECTION DRAWINGS. THE SECTION LINES FOR AA ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. VIEW OF SECTION DRAWINGS. THE SECTION LINES FOR A-A AND C-C CUT THE BUILDING EAST-WEST; SECTION LINE B-B CUTS THE BUILDING NORTH-SOUTH. THE ORIGINAL DRAWING HAS BEEN ARCHIVED ON MICROFILM. THE DRAWING WAS REPRODUCED AT THE BEST QUALITY POSSIBLE. LETTERS AND NUMBERS IN THE CIRCLES INDICATE FOOTER AND/OR COLUMN LOCATIONS. - Rocky Flats Plant, Non-Nuclear Production Facility, South of Cottonwood Avenue, west of Seventh Avenue & east of Building 460, Golden, Jefferson County, CO

  9. Cutting thin sections of bone

    NASA Technical Reports Server (NTRS)

    Ashley, W. W.

    1972-01-01

    Medical equipment for obtaining repetitive planoparallel sections of bone to study healing of bone structure under high gravity stress is described. Device consists of modified saw with diamond cutting edges. Construction of device and manner of use are explained.

  10. Cross sections at hadron colliders

    SciTech Connect

    Paige, F.E.

    1982-01-01

    The predicted cross sections are given for new Z'/sup 0/ bosons, for the Drell-Yan continuum of ..mu../sup +/..mu../sup -/ pairs, for high p/sub T/ hadron jets, for high p/sub T/ single photons, and for the associated production of heavy quarks. These processes have been selected not to cover the most interesting physics, but to provide a representative selection of cross sections for which to compare various energies and luminosities.

  11. Hydrology Section Executive Committee Minutes

    NASA Astrophysics Data System (ADS)

    Mercer, James W.

    The AGU Hydrology Section Executive Committee Meeting was called to order at approximately 4 P.M. on Monday, May 18, 1987, by Hydrology Section President Marshall Moss. In attendance were President-Elect George Pinder, Secretary Jim Mercer, Ron Cummings, Helen Joyce Peters, Peter Eagleson, Stephen Burges, Jim Wallis, Jurate Landwehr, Don Nielson, Ken Bencala, Pete Loucks, Jery Stedinger, Dennis Lettenmaier, Lenny Konikow, Ken Potter, John Wilson, Ivan Johnson, and Judy Holoviak.

  12. Remarks From the section president

    NASA Astrophysics Data System (ADS)

    Morse, Tony

    The old order changeth and Bruce Marsh is hibernating in the forests of Maine, where his fellow loggers wish him well on a much-deserved sabbatical. VGP members have cause to be very grateful for his presidency, in which he inaugurated the Presidents' Breakfasts for the exchange of information among the sections at each of our annual meetings, served heroically on editorial search and audit committees, and ran our section with the kind of loose informality and penetrating insight that it deserves.

  13. 242Amm fission cross section

    NASA Astrophysics Data System (ADS)

    Browne, J. C.; White, R. M.; Howe, R. E.; Landrum, J. H.; Dougan, R. J.; Dupzyk, R. J.

    1984-06-01

    The neutron-induced fission cross section of 242Amm has been measured over the energy region from 10-3 eV to ~20 MeV in a series of experiments utilizing a linac-produced "white" neutron source and a monoenergetic source of 14.1 MeV neutrons. The cross section was measured relative to that of 235U in the thermal (0.001 to ~3 eV) and high energy (1 keV to ~20 MeV) regions and normalized to the ENDF/B-V 235U(n,f) evaluated cross section. In the resonance energy region (0.5 eV to 10 keV) the neutron flux was measured using thin lithium glass scintillators and the relative cross section thus obtained was normalized to the thermal energy measurement. This procedure allowed a consistency check between the thermal and high energy data. The cross section data have a statistical accuracy of ~0.5% at thermal energies and in the 1-MeV energy region, and a systematic uncertainty of ~5%. We confirmed that 242Amm has the largest thermal fission cross section known with a 2200 m/sec value of 6328 b. Results of a Breit-Wigner sum-of-single-levels analysis of 48 fission resonances up to 20 eV are presented and the connection of these resonance properties to the large thermal cross section is discussed. Our measurements are compared with previously reported results.

  14. [Cesarean section and eye disorders].

    PubMed

    Karska-Basta, Izabella; Tarasiewicz, Marta; Kubicka-Trząska, Agnieszka; Miniewicz, Joanna; Romanowska-Dixon, Bożena

    2016-01-01

    Recently, a growing tendency for cesarean birth has been noted both, in Poland and worldwide. Non-obstetric problems constitute a large part of indications for cesarean section. Many ophthalmologists and obstetricians still believe that high myopia, the presence of peripheral retinal degenerations, history of retinal detachment surgery, diabetic retinopathy, or glaucoma are indications for surgical termination of pregnancy. However, these recommendations are not evidence-based. The literature offers no proof that high myopia and previous retinal surgery increase the risk of retinal detachment during spontaneous vaginal delivery. There is only one indication for cesarean section in myopic patients, i.e. the presence of choroidal neovascularization, which can cause subretinal bleeding with acute visual loss. Prolonged and intensified Valsalva maneuver during labor in patients with an active proliferative diabetic retinopathy may be an indication for an elective cesarean section. Uterine contractions during the second stage of vaginal delivery lead to a marked elevation of intraocular pressure. Intraocular pressure fluctuations during the delivery may damage retinal ganglion cells, resulting in further progression of visual field. Thus, glaucoma associated with advanced visual field changes is the next ophthalmic indication for cesarean section. The report presents the current state of knowledge concerning the effect of pregnancy on pre-existing ocular disorders and the influence of physiological changes on the clinical course of these diseases during the stages of natural delivery. The authors discuss also the ophthalmic indications for cesarean section. PMID:27306132

  15. Adaptive wall testing sections (AWTS)

    NASA Technical Reports Server (NTRS)

    Wolf, Stephen W. D.; Kilgore, Robert A.

    1987-01-01

    The lecture starts with conventional techniques of minimizing wall interference and explains the principle of wall streamlining. The history of AWTS development is highlighted, along with the benefits of wall streamlining, including minimized boundary interference, increased model size, reduced tunnel drive power, noise, and volume, as well as multiple flow field simulations to be performed using one test section. AWTS-associated problems coming from the need to adjust the test-section boundaries for each test condition are assessed, along with the requirements of a boundary-adjustment strategy. Examples of two- and three-dimensional test sections are presented, and attention is focused on residual interference and the effects of compressibility and model lift on flexible-wall contours.

  16. Wind tunnel flow generation section

    NASA Technical Reports Server (NTRS)

    Sorensen, N. E. (Inventor)

    1974-01-01

    A flow generation section for a wind tunnel test facility is described which provides a uniform flow for the wind tunnel test section over a range of different flow velocities. The throat of the flow generation section includes a pair of opposed boundary walls which are porous to the flowing medium in order to provide an increase of velocity by expansion. A plenum chamber is associated with the exterior side of each of such porous walls to separate the same from ambient pressure. A suction manifold is connected by suction lines with each one of the chambers. Valves are positioned in each of the lines to enable the suction manifold to be independently varied.

  17. [The history of cesarean section].

    PubMed

    Aubard, Y; Le Meur, Y; Grandjean, M H; Baudet, J H

    1995-01-01

    The origins of the Cesarian section date back to the Classical era, and possible even earlier. Ancient India, the Hebrews, the Grecks and the Romans were all familiar with post-mortem Cesarian section. The operation marked time during the Middle Ages. The name "Cesarian section" was first used to designate this operation during the Renaissance period, when it was first carried out in live women. However, until the middle of XIX th century, a Cesarian remained a last chance option which was cautioned against by most obstetricians. It was only after the advent of the "surgical golden tripod" that the Cesarian was gradually rehabilitated through the work of Poro, Kherer and Sanger and the German School. In the XIXth century, segmental incision became the norm and fetal indications for a Cesarian emerged. PMID:7899774

  18. Accurate Cross Sections for Microanalysis

    PubMed Central

    Rez, Peter

    2002-01-01

    To calculate the intensity of x-ray emission in electron beam microanalysis requires a knowledge of the energy distribution of the electrons in the solid, the energy variation of the ionization cross section of the relevant subshell, the fraction of ionizations events producing x rays of interest and the absorption coefficient of the x rays on the path to the detector. The theoretical predictions and experimental data available for ionization cross sections are limited mainly to K shells of a few elements. Results of systematic plane wave Born approximation calculations with exchange for K, L, and M shell ionization cross sections over the range of electron energies used in microanalysis are presented. Comparisons are made with experimental measurement for selected K shells and it is shown that the plane wave theory is not appropriate for overvoltages less than 2.5 V. PMID:27446747

  19. Transition section for acoustic waveguides

    DOEpatents

    Karplus, H.H.B.

    1975-10-28

    A means of facilitating the transmission of acoustic waves with minimal reflection between two regions having different specific acoustic impedances is described comprising a region exhibiting a constant product of cross-sectional area and specific acoustic impedance at each cross-sectional plane along the axis of the transition region. A variety of structures that exhibit this feature is disclosed, the preferred embodiment comprising a nested structure of doubly reentrant cones. This structure is useful for monitoring the operation of nuclear reactors in which random acoustic signals are generated in the course of operation.

  20. 24 CFR 882.123 - Conversion of Section 23 Units to Section 8 and Section 23 monitoring.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... Housing Annual Adjustment Factor (24 CFR part 888) most recently published by HUD in the Federal Register... Section 8 and Section 23 monitoring. 882.123 Section 882.123 Housing and Urban Development REGULATIONS... Applicability, Scope and Basic Policies § 882.123 Conversion of Section 23 Units to Section 8 and Section...

  1. 24 CFR 882.123 - Conversion of Section 23 Units to Section 8 and Section 23 monitoring.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... Housing Annual Adjustment Factor (24 CFR part 888) most recently published by HUD in the Federal Register... Section 8 and Section 23 monitoring. 882.123 Section 882.123 Housing and Urban Development REGULATIONS... Applicability, Scope and Basic Policies § 882.123 Conversion of Section 23 Units to Section 8 and Section...

  2. Neonatology and the caesarean section.

    PubMed

    Zanini, R; Minghetti, D

    2012-10-01

    The origins of the use of the Caesarean section date far back in human history. Traces of this procedure can be found in Greek mythology and in the history of Ancient Rome. Many documents about the history of religion make reference to a delivery from the abdomen. PMID:22958012

  3. Neutrino cross-sections: Experiments

    SciTech Connect

    Sánchez, F.

    2015-07-15

    Neutrino-nucleus cross-sections are as of today the main source of systematic errors for oscillation experiments together with neutrino flux uncertainties. Despite recent experimental and theoretical developments, future experiments require even higher precisions in their search of CP violation. We will review the experimental status and explore possible future developments required by next generation of experiments.

  4. 46 CFR Section 1 - Purpose.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION B-CONTROL AND UTILIZATION OF PORTS FEDERAL PORT CONTROLLERS Section 1 Purpose. This part prescribes the standard form of the service agreement to be entered into by the United States of America, acting by and through the Director, National Shipping Authority (NSA) of...

  5. 46 CFR Section 1 - Purpose.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... ADMINISTRATION, DEPARTMENT OF TRANSPORTATION B-CONTROL AND UTILIZATION OF PORTS FEDERAL PORT CONTROLLERS Section 1 Purpose. This part prescribes the standard form of the service agreement to be entered into by the United States of America, acting by and through the Director, National Shipping Authority (NSA) of...

  6. 46 CFR 154.1130 - Sections.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Sections. (a) If a water spray system is divided into sections, each section must at least include the... spray system is divided into sections, the control valves must be at a single manifold that is aft...

  7. 75 FR 4482 - Airworthiness Directives; Eurocopter France Model SE3160, SA315B, SA316B, SA316C, and SA319B...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-28

    ... published as a final rule on August 28, 2003 (68 FR 51681). The current AD requires certain inspections of a... published on April 11, 2000 (65 FR 19477-78). Regulatory Findings We have determined that this AD will not... Order 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44...

  8. Industry liaison section implementation plan

    NASA Technical Reports Server (NTRS)

    Lakowske, Stephen

    1990-01-01

    The Industry Liaison Section is a new function of the Army/NASA Aircrew-Aircraft Integration (AAAI) Program that is intended to bridge an existing gap between Government developers (including contractors) and outside organizations who are potential users of products and services developed by the AAAI Program. Currently in its sixth year, the Program is experiencing considerable pull from industry and other government organizations to disseminate products. Since the AAAI Program's charter is exploratory and research in nature, and satisfying proper dissemination requirements is in conflict with the rapid prototyping approach utilized by the design team, the AAAI Program has elected to create an Industry Liaison Section (ILS) to serve as the Program's technology transfer focal point. The process by which the ILS may be established, organized and managed is described, including the baseline organizational structure, duties, functions, authority, responsibilities, relations and policies and procedures relevant to the conduct of the ILS.

  9. Transverse section radionuclide scanning system

    DOEpatents

    Kuhl, David E.; Edwards, Roy Q.

    1976-01-01

    This invention provides a transverse section radionuclide scanning system for high-sensitivity quantification of brain radioactivity in cross-section picture format in order to permit accurate assessment of regional brain function localized in three-dimensions. High sensitivity crucially depends on overcoming the heretofore known raster type scanning, which requires back and forth detector movement involving dead-time or partial enclosure of the scan field. Accordingly, this invention provides a detector array having no back and forth movement by interlaced detectors that enclose the scan field and rotate as an integral unit around one axis of rotation in a slip ring that continuously transmits the detector data by means of laser emitting diodes, with the advantages that increased amounts of data can be continuously collected, processed and displayed with increased sensitivity according to a suitable computer program.

  10. Hydrology Section Executive Committee minutes

    NASA Astrophysics Data System (ADS)

    Mercer, James W.

    The AGU Hydrology Section Executive Committee Meeting was called to order at approximately 4 P.M. on Monday, December 8, 1986 by Marshall Moss. In attendance were George Pinder, Allan Freeze, Jim Mercer, Ron Cummings, Ken Bencala, Jim Wallis, Simon Ince, Jack Stone, Jeff Dozier, Don Nielson, Ivan Johnson, John Wilson, Helen Peters, Jurate Landwehr, Karen Prestegaard, Soroosh Sorooshian, Jery Stedinger, Peter Kitanidis, Rafael Bras, and Waldo Smith.

  11. Taxonomy of Penicillium section Citrina

    PubMed Central

    Houbraken, J.; Frisvad, J.C.; Samson, R.A.

    2011-01-01

    Species of Penicillium section Citrina have a worldwide distribution and occur commonly in soils. The section is here delimited using a combination of phenotypic characters and sequences of the nuclear ribosomal RNA gene operon, including the internal transcribed spacer regions ITS1 and ITS2, the 5.8S nrDNA (ITS) and partial RPB2 sequences. Species assigned to section Citrina share the production of symmetrically biverticillate conidiophores, flask shaped phialides (7.0–9.0 μm long) and relatively small conidia (2.0–3.0 μm diam). Some species can produce greyish-brown coloured cleistothecia containing flanged ascospores. In the present study, more than 250 isolates presumably belonging to section Citrina were examined using a combined analysis of phenotypic and physiological characters, extrolite profiles and ITS, β-tubulin and/or calmodulin sequences. Section Citrina includes 39 species, and 17 of those are described here as new. The most important phenotypic characters for distinguishing species are growth rates and colony reverse colours on the agar media CYA, MEA and YES; shape, size and ornamentation of conidia and the production of sclerotia or cleistothecia. Temperature-growth profiles were made for all examined species and are a valuable character characters for species identification. Species centered around P. citrinum generally have a higher maximum growth temperature (33–36 °C) than species related to P. westlingii (27–33 °C). Extrolite patterns and partial calmodulin and β-tubulin sequences can be used for sequence based identification and resolved all species. In contrast, ITS sequences were less variable and only 55 % of the species could be unambiguously identified with this locus. Taxonomic novelties: Penicillium argentinense Houbraken, Frisvad & Samson, P. atrofulvum Houbraken, Frisvad & Samson, P. aurantiacobrunneum Houbraken, Frisvad & Samson, P. cairnsense Houbraken, Frisvad & Samson, P. christenseniae Houbraken, Frisvad & Samson

  12. (Fast neutron cross section measurements)

    SciTech Connect

    Not Available

    1991-01-01

    In the 14 MeV Neutron Laboratory, we have continued the development of a facility that is now the only one of its kind in operation in the United States. We have refined the klystron bunching system described in last year's report to the point that 1.2 nanosecond pulses have been directly measured. We have tested the pulse shape discrimination capability of our primary NE 213 neutron detector. We have converted the RF sweeper section of the beamline to a frequency of 1 MHz to replace the function of the high voltage pulser described in last year's report which proved to be difficult to maintain and unreliable in its operation. We have also overcome several other significant experimental difficulties, including a major problem with a vacuum leak in the main accelerator column. We have completed additional testing to prove the remainder of the generation and measurement systems, but overcoming some of these experimental difficulties has delayed the start of actual data taking. We are now in a position to begin our first series of ring geometry elastic scattering measurements, and these will be underway before the end of the current contract year. As part of our longer term planning, we are continuing the conceptual analysis of several schemes to improve the intensity of our current pulsed beam. These include the provision of a duoplasmatron ion source and/or the provision of preacceleration bunching. Additional details are given later in this report. A series of measurements were carried out at the Tandem Dynamatron Facility involving the irradiation of a series of yttrium foils and the determination of activation cross sections using absolute counting techniques. The experimental work has been completed, and final analysis of the cross section data will be completed within several months.

  13. Recommended Dosimetry Cross Section Compendium.

    Energy Science and Technology Software Center (ESTSC)

    1994-07-11

    Version 00 The data is recommended for spectrum determination applications and for the prediction of neutron activation of typical radiation sensor materials. The library has been tested for consistency of the cross sections in a wide variety of neutron environments. The results and cautions from this testing have been documented. The data has been interfaced with radiation transport codes, such as TWODANT-SYS (CCC-547) and MCNP (CCC-200), in order to compare calculated and measured activities formore » benchmark reactor experiments.« less

  14. Turbine airfoil having outboard and inboard sections

    SciTech Connect

    Mazzola, Stefan; Marra, John J

    2015-03-17

    A turbine airfoil usable in a turbine engine and formed from at least an outboard section and an inboard section such that an inner end of the outboard section is attached to an outer end of the inboard section. The outboard section may be configured to provide a tip having adequate thickness and may extend radially inward from the tip with a generally constant cross-sectional area. The inboard section may be configured with a tapered cross-sectional area to support the outboard section.

  15. 14 CFR Section 2 - General Accounting Policies

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false General Accounting Policies Section 2 Section 2 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION... General Accounting Provisions Section 2 General Accounting Policies...

  16. 14 CFR Section 2 - General Accounting Policies

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false General Accounting Policies Section 2 Section 2 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION... General Accounting Provisions Section 2 General Accounting Policies...

  17. SPA Meteor Section Results: 2007

    NASA Astrophysics Data System (ADS)

    McBeath, Alastair

    2013-08-01

    Information extracted from analyses carried out by the SPA Meteor Section from 2007 is presented and discussed. Events covered include: the radio Quadrantid maximum on January 4; a bright fireball seen from parts of England and imaged from the Netherlands at 19h56m UT on February 6, for which an approximate trajectory was established; radio results from the Lyrids in late April; the Perseid near-peak activity from August and a note on some daylight Perseid observing from Britain using thermal imagers; the radio α-Aurigid maximum on September 1; the Orionid return, which again provided enhanced activity over several consecutive dates in October for visual and radio observers; the radio Leonids, although the probably main peak found visually on November 19 was not recorded thus due to its timing; the typically protracted Geminid maximum period around December 13-15 as observed visually and by radio; and the Ursid outburst, primarily as detected by radio on December 22.

  18. To the Ocean Sciences section

    NASA Astrophysics Data System (ADS)

    Hickey, Barbara

    To maximize our ability to obtain recognition of Ocean Sciences Section members as Fellows of AGU while minimizing the associated workload, I have, in consultation with our executive committee, established an Ocean Sciences Fellows Committee chaired by the President-Elect to oversee and assist in the nomination process.The committee asks that anyone wanting to sponsor a nomination send a one-page proposal telling why an individual should be made a Fellow. Proposals will be reviewed by the commitee, and a number equal to 1 ½ to 2 times our nomination quota will be chosen for full presentation. Committee members will then work with nominators to select and contact seconders, while the nominator provides the required curriculum vitae and publication list. The committee will assist in any manner possible to insure that the files that go forward are both timely and well documented.

  19. 24 CFR 882.123 - Conversion of Section 23 Units to Section 8 and Section 23 monitoring.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Housing Annual Adjustment Factor (24 CFR part 888) most recently published by HUD in the Federal Register... 24 Housing and Urban Development 4 2010-04-01 2010-04-01 false Conversion of Section 23 Units to... Applicability, Scope and Basic Policies § 882.123 Conversion of Section 23 Units to Section 8 and Section...

  20. SPA Meteor Section Results: 2008

    NASA Astrophysics Data System (ADS)

    McBeath, Alastair

    2013-10-01

    A report based on meteor data analyses from 2008 performed by the SPA Meteor Section is given with some discussion. Items detailed comprise: the Quadrantid peak on January 4 which may have had an unusual dip in activity partway through; the Perseid maximum, which seemed to produce two peaks, by far the strongest-recorded of which was around 02h UT on August 13; a meteor outburst on September 9 probably due to the September epsilon-Perseids, for which the radio results suggested activity was present at a stronger level for longer than previous visual and video findings had supposed, perhaps with more than one maximum; another stronger than expected return from the Orionids during October, part of the sequence of unusual events begun in 2006; a fresh Taurid ``swarm'' return in late October to early November, which probably produced somewhat higher activity than normal, if without the increased bright-meteor component observed at some previous returns; strong Leonid activity later in November, from the radio reports, possibly with two peaks; a Geminid maximum in December which showed some curious discrepancies between the limited visual and radio observations; and the Ursids, which may have provided another moderately-enhanced return, with up to four potential peaks recorded by radio observations in the first twelve hours UT of December 22.

  1. Electron Photon Interaction Cross Sections

    SciTech Connect

    Cullen, D. E.

    2014-11-01

    Version 00 The Electron Photon Interaction Cross Sections, EPICS, provides the atomic data needed to perform coupled Electron-Photon transport calculations, to produce accurate macroscopic results, such as energy deposit and dose. Atomic data is provided for elements, Z = 1 to 100, over the energy range 10 eV to 100 GeV; note that nuclear data, such as photo-nuclear, and data for compounds, are not included. All data is in a simple computer independent text format that is standard and presented to a high precision that can be easily read by computer codes written in any computer language, e.g., C, C++, and FORTRAN. EPICS includes four separate data bases that are designed to be used in combination, these include, • The Evaluated Electron Data Library (EEDL), to describe the interaction of electrons with matter. • The Evaluated Photon Data Library (EPDL), to describe the interaction of photons with matter. • The Evaluated Atomic Data Library (EADL), to describe the emission of electrons and photons back to neutrality following an ionizing event, caused by either electron or photon interactions. • The Evaluated Excitation Data Library (EXDL), to describe the excitation of atoms due to photon interaction. All of these are available in the Extended ENDL format (ENDLX) in which the evaluations were originally performed. The first three are also available in the ENDF format; as yet ENDF does not include formats to handle excitation data (EXDL).

  2. Electron Photon Interaction Cross Sections

    Energy Science and Technology Software Center (ESTSC)

    2014-11-01

    Version 00 The Electron Photon Interaction Cross Sections, EPICS, provides the atomic data needed to perform coupled Electron-Photon transport calculations, to produce accurate macroscopic results, such as energy deposit and dose. Atomic data is provided for elements, Z = 1 to 100, over the energy range 10 eV to 100 GeV; note that nuclear data, such as photo-nuclear, and data for compounds, are not included. All data is in a simple computer independent text formatmore » that is standard and presented to a high precision that can be easily read by computer codes written in any computer language, e.g., C, C++, and FORTRAN. EPICS includes four separate data bases that are designed to be used in combination, these include, • The Evaluated Electron Data Library (EEDL), to describe the interaction of electrons with matter. • The Evaluated Photon Data Library (EPDL), to describe the interaction of photons with matter. • The Evaluated Atomic Data Library (EADL), to describe the emission of electrons and photons back to neutrality following an ionizing event, caused by either electron or photon interactions. • The Evaluated Excitation Data Library (EXDL), to describe the excitation of atoms due to photon interaction. All of these are available in the Extended ENDL format (ENDLX) in which the evaluations were originally performed. The first three are also available in the ENDF format; as yet ENDF does not include formats to handle excitation data (EXDL).« less

  3. Introduction to Seamount Special Section

    NASA Astrophysics Data System (ADS)

    Watts, A. B.

    1984-12-01

    This special section is the outcome of a symposium held at the Lamont-Doherty Geological Observatory November 17-19, 1982, on the origin and evolution of seamounts. The topic for the symposium arose from the realization that although there is now a wealth of new ideas on the geology, geophysics, and geochemistry of the ocean floor, the study of seamounts has been relatively neglected despite their great importance to plate tectonics. One of the most interesting features of the ocean floor is the large number of small volcanoes or seamounts. Usually, these features are circular in plan view and have a sharp summit. There has been extensive debate in the literature about the significance of the different morphological types of seamounts. A traditional view has been that flattopped seamounts (e.g., guyots) formed as a result of subaerial erosion when the volcanoes were above sea level. Seamounts covered by fringing reefs or sediments (e.g., atolls), on the other hand, are believed to have formed when the original volcanic foundation subsided below sea level.

  4. [Fast neutron cross section measurements

    SciTech Connect

    Knoll, G.F.

    1992-10-26

    From its inception, the Nuclear Data Project at the University of Michigan has concentrated on two major objectives: (1) to carry out carefully controlled nuclear measurements of the highest possible reliability in support of the national nuclear data program, and (2) to provide an educational opportunity for students with interests in experimental nuclear science. The project has undergone a successful transition from a primary dependence on our photoneutron laboratory to one in which our current research is entirely based on a unique pulsed 14 MeV fast neutron facility. The new experimental facility is unique in its ability to provide nanosecond bursts of 14 MeV neutrons under conditions that are clean'' and as scatter-free as possible, and is the only one of its type currently in operation in the United States. It has been designed and put into operation primarily by graduate students, and has met or exceeded all of its important initial performance goals. We have reached the point of its routine operation, and most of the data are now in hand that will serve as the basis for the first two doctoral dissertations to be written by participating graduate students. Our initial results on double differential neutron cross sections will be presented at the May 1993 Fusion Reactor Technology Workshop. We are pleased to report that, after investing several years in equipment assembly and optimization, the project has now entered its data production'' phase.

  5. 49 CFR 236.798 - Section, dead.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Section, dead. 236.798 Section 236.798 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION... Section, dead. A section of track, either within a track circuit or between two track circuits, the...

  6. 49 CFR 236.798 - Section, dead.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Section, dead. 236.798 Section 236.798 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION... Section, dead. A section of track, either within a track circuit or between two track circuits, the...

  7. 49 CFR 236.798 - Section, dead.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Section, dead. 236.798 Section 236.798 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION... Section, dead. A section of track, either within a track circuit or between two track circuits, the...

  8. 49 CFR 236.798 - Section, dead.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Section, dead. 236.798 Section 236.798 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION... Section, dead. A section of track, either within a track circuit or between two track circuits, the...

  9. 49 CFR 236.798 - Section, dead.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Section, dead. 236.798 Section 236.798 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL RAILROAD ADMINISTRATION... Section, dead. A section of track, either within a track circuit or between two track circuits, the...

  10. Quantized conic sections; quantum gravity

    SciTech Connect

    Noyes, H.P.

    1993-03-15

    Starting from free relativistic particles whose position and velocity can only be measured to a precision < {Delta}r{Delta}v > {equivalent_to} {plus_minus} k/2 meter{sup 2}sec{sup {minus}1} , we use the relativistic conservation laws to define the relative motion of the coordinate r = r{sub 1} {minus} r{sub 2} of two particles of mass m{sub 1}, m{sub 2} and relative velocity v = {beta}c = {sub (k{sub 1} + k{sub 2}})/ {sup (k{sub 1} {minus} k{sub 2}}) in terms of conic section equation v{sup 2} = {Gamma} [2/r {plus_minus} 1/a] where ``+`` corresponds to hyperbolic and ``{minus}`` to elliptical trajectories. Equation is quantized by expressing Kepler`s Second Law as conservation of angular niomentum per unit mass in units of k. Principal quantum number is n {equivalent_to} j + {1/2} with``square`` {sub T{sup 2}}/{sup A{sup 2}} = (n {minus}1)nk{sup 2} {equivalent_to} {ell}{sub {circle_dot}}({ell}{sub {circle_dot}} + 1)k{sup 2}. Here {ell}{sub {circle_dot}} = n {minus} 1 is the angular momentumquantum number for circular orbits. In a sense, we obtain ``spin`` from this quantization. Since {Gamma}/a cannot reach c{sup 2} without predicting either circular or asymptotic velocities equal to the limiting velocity for particulate motion, we can also quantize velocities in terms of the principle quantum number by defining {beta}{sub n}/{sup 2} = {sub c{sup 2}}/{sup v{sub n{sup 2}} = {sub n{sup 2}}/1({sub c{sup 2}}a/{Gamma}) = ({sub nN{Gamma}}/1){sup 2}. For the Z{sub 1}e,Z{sub 2}e of the same sign and {alpha} {triple_bond} e{sup 2}/m{sub e}{kappa}c, we find that {Gamma}/c{sup 2}a = Z{sub 1}Z{sub 2}{alpha}. The characteristic Coulomb parameter {eta}(n) {triple_bond} Z{sub 1}Z{sub 2}{alpha}/{beta}{sub n} = Z{sub 1}Z{sub 2}nN{sub {Gamma}} then specifies the penetration factor C{sup 2}({eta}) = 2{pi}{eta}/(e{sup 2{pi}{eta}} {minus} 1}). For unlike charges, with {eta} still taken as positive, C{sup 2}({minus}{eta}) = 2{pi}{eta}/(1 {minus} e{sup {minus}2{pi}{eta}}).

  11. Electron-Impact Ionization Cross Section Database

    National Institute of Standards and Technology Data Gateway

    SRD 107 Electron-Impact Ionization Cross Section Database (Web, free access)   This is a database primarily of total ionization cross sections of molecules by electron impact. The database also includes cross sections for a small number of atoms and energy distributions of ejected electrons for H, He, and H2. The cross sections were calculated using the Binary-Encounter-Bethe (BEB) model, which combines the Mott cross section with the high-incident energy behavior of the Bethe cross section. Selected experimental data are included.

  12. FOREWORD: Special section on imaging

    NASA Astrophysics Data System (ADS)

    Bertero, M.; Scherzer, O.

    2003-12-01

    Imaging is a rapidly growing area in applied sciences. It has an interdisciplinary character and a wide range of applications such as medicine, nondestructive evaluation, microscopy and astronomy, as well as many industrial processes. The increasing demand on imaging is due to the change of role of vision. Today vision is not through eyes only but complemented, for instance, by ultrasound, x-ray computerized tomography (CT), electrical impedance tomography (EIT), to name but a few. Moreover, traditional imaging systems such as microscopes and telescopes are now equipped with detection instruments (CCD cameras) and the resulting digital images are currently processed and enhanced. Finally, the relevance of imaging for industry is best documented by a recent feature by Robert West (West R 2003 In industry, seeing is believing Physics World June 2003). Today the scope of imaging has broadened and plays a central role in many different areas ranging, for instance, from remote sensing to seismology. In most cases the new imaging techniques are based on indirect measurements of physical parameters; therefore they quite naturally lead to the demand of solving (linear or nonlinear) inverse problems. This indicates the central role that inverse problems have in imaging science. This special section highlights several topics of recent advances in imaging. The first five papers concern problems originating from medical imaging which can have important applications in other domains. The paper by Ji et al covers a new and promising diagnostic tool in medicine: the identification of abnormal tissues by elastic shear wave properties. The two subsequent papers by Louis and by Defrise et al concern 3D cone beam tomography which is the most recent and advanced technique in x-ray CT. Both the case of circular and helical scanning are considered. The paper by Developing a section labeler for clinical documents.

    PubMed

    Haug, Peter J; Wu, Xinzi; Ferraro, Jeffery P; Savova, Guergana K; Huff, Stanley M; Chute, Christopher G

    2014-01-01

    Natural language processing (NLP) technologies provide an opportunity to extract key patient data from free text documents within the electronic health record (EHR). We are developing a series of components from which to construct NLP pipelines. These pipelines typically begin with a component whose goal is to label sections within medical documents with codes indicating the anticipated semantics of their content. This Clinical Section Labeler prepares the document for further, focused information extraction. Below we describe the evaluation of six algorithms designed for use in a Clinical Section Labeler. These algorithms are trained with N-gram-based feature sets extracted from document sections and the document types. In the evaluation, 6 different Bayesian models were trained and used to assign one of 27 different topics to each section. A tree-augmented Bayesian network using the document type and N-grams derived from section headers proved most accurate in assigning individual sections appropriate section topics. PMID:25954369

  13. 40 CFR 86.1204 - Section numbering.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Test Procedures for New Gasoline-Fueled, Natural Gas-Fueled, Liquefied Petroleum Gas-Fueled and Methanol-Fueled Heavy-Duty Vehicles § 86.1204 Section numbering. The section numbering system set forth...

  14. Vaginal birth after C-section

    MedlinePlus

    ... gov/ency/patientinstructions/000589.htm Vaginal birth after C-section To use the sharing features on this ... enable JavaScript. If you had a cesarean birth (C-section) before, it does not mean that you ...

  15. Going home after a C-section

    MedlinePlus

    ... ency/patientinstructions/000624.htm Going home after a C-section To use the sharing features on this ... enable JavaScript. You are going home after a C-section. You should expect to need help caring ...

  16. Grading of cervical dysplasias by frozen section.

    PubMed

    Fletcher, S; Smart, G E; Livingstone, J R

    1985-09-14

    Grading of cervical dysplasias at colposcopy by means of rapid frozen section avoids the delay inevitable with paraffin sections. The immediacy of the diagnosis benefits the patient, who can be treated at her first visit. A comparison of grading by frozen sections with paraffin sections has confirmed the safety of the frozen method. Additional advantages are opportunities for optimum orientation and "rescue" of specimens, improved colposcopic training, and the facilitation of special investigations on fresh cervical tissue. PMID:2863606

  17. Photoproduction total cross section and shower development

    NASA Astrophysics Data System (ADS)

    Cornet, F.; García Canal, C. A.; Grau, A.; Pancheri, G.; Sciutto, S. J.

    2015-12-01

    The total photoproduction cross section at ultrahigh energies is obtained using a model based on QCD minijets and soft-gluon resummation and the ansatz that infrared gluons limit the rise of total cross sections. This cross section is introduced into the Monte Carlo system AIRES to simulate extended air showers initiated by cosmic ray photons. The impact of the new photoproduction cross section on common shower observables, especially those related to muon production, is compared with previous results.

  18. 46 CFR Section 1 - Books of account.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... (46 CFR part 282) and recordings in the accounts shall be in accordance with the descriptions thereof... 46 Shipping 8 2012-10-01 2012-10-01 false Books of account. Section 1 Section 1 Shipping MARITIME... TRANSACTIONS UNDER AGENCY AGREEMENTS Accounts Section 1 Books of account. A separate set of books of...

  19. 46 CFR Section 1 - Books of account.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... (46 CFR part 282) and recordings in the accounts shall be in accordance with the descriptions thereof... 46 Shipping 8 2013-10-01 2013-10-01 false Books of account. Section 1 Section 1 Shipping MARITIME... TRANSACTIONS UNDER AGENCY AGREEMENTS Accounts Section 1 Books of account. A separate set of books of...

  1. 46 CFR Section 1 - Books of account.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... (46 CFR part 282) and recordings in the accounts shall be in accordance with the descriptions thereof... 46 Shipping 8 2014-10-01 2014-10-01 false Books of account. Section 1 Section 1 Shipping MARITIME... TRANSACTIONS UNDER AGENCY AGREEMENTS Accounts Section 1 Books of account. A separate set of books of...

  2. 46 CFR Section 1 - Books of account.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... (46 CFR part 282) and recordings in the accounts shall be in accordance with the descriptions thereof... 46 Shipping 8 2011-10-01 2011-10-01 false Books of account. Section 1 Section 1 Shipping MARITIME... TRANSACTIONS UNDER AGENCY AGREEMENTS Accounts Section 1 Books of account. A separate set of books of...

  3. 46 CFR Section 1 - Books of account.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... (46 CFR part 282) and recordings in the accounts shall be in accordance with the descriptions thereof... 46 Shipping 8 2010-10-01 2010-10-01 false Books of account. Section 1 Section 1 Shipping MARITIME... TRANSACTIONS UNDER AGENCY AGREEMENTS Accounts Section 1 Books of account. A separate set of books of...

  4. 76 FR 20373 - Section 302 Report

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-12

    ... related to Section 302. (76 FR 11816). This notice is extending the time in which comments and reply... operation of Section 302 and critical to the Office's analysis of the legal and business landscapes. 79 FR... Copyright Office Section 302 Report AGENCY: Copyright Office, Library of Congress. ACTION: Notice of...

  5. 14 CFR Section 22 - General Reporting Instructions

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... T-100(f) Foreign air carrier traffic data by nonstop segment and on-flight market M (see 14 CFR 217..., section 22, see the List of CFR Sections Affected, which appears in the Finding Aids section of the...) One copy of each schedule in the BTS Form 41 report shall be filed with the BTS and shall be...

  6. 14 CFR Section 22 - General Reporting Instructions

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... T-100(f) Foreign air carrier traffic data by nonstop segment and on-flight market M (see 14 CFR 217..., section 22, see the List of CFR Sections Affected, which appears in the Finding Aids section of the...) One copy of each schedule in the BTS Form 41 report shall be filed with the BTS and shall be...

  7. 14 CFR Section 22 - General Reporting Instructions

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... T-100(f) Foreign air carrier traffic data by nonstop segment and on-flight market M (see 14 CFR 217..., section 22, see the List of CFR Sections Affected, which appears in the Finding Aids section of the...) One copy of each schedule in the BTS Form 41 report shall be filed with the BTS and shall be...

  8. 14 CFR Section 22 - General Reporting Instructions

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... T-100(f) Foreign air carrier traffic data by nonstop segment and on-flight market M (see 14 CFR 217..., section 22, see the List of CFR Sections Affected, which appears in the Finding Aids section of the...) One copy of each schedule in the BTS Form 41 report shall be filed with the BTS and shall be...

  9. 14 CFR Section 04 - Air Carrier Groupings

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 4 2014-01-01 2014-01-01 false Air Carrier Groupings Section 04 Section 04... REGULATIONS UNIFORM SYSTEM OF ACCOUNTS AND REPORTS FOR LARGE CERTIFICATED AIR CARRIERS Section 04 Air Carrier Groupings (a) All large certificated air carriers are placed into three basic air carrier groupings...

  10. 14 CFR Section 04 - Air Carrier Groupings

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 4 2013-01-01 2013-01-01 false Air Carrier Groupings Section 04 Section 04... REGULATIONS UNIFORM SYSTEM OF ACCOUNTS AND REPORTS FOR LARGE CERTIFICATED AIR CARRIERS Section 04 Air Carrier Groupings (a) All large certificated air carriers are placed into three basic air carrier groupings...

  11. 14 CFR Section 04 - Air Carrier Groupings

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false Air Carrier Groupings Section 04 Section 04... REGULATIONS UNIFORM SYSTEM OF ACCOUNTS AND REPORTS FOR LARGE CERTIFICATED AIR CARRIERS Section 04 Air Carrier Groupings (a) All large certificated air carriers are placed into three basic air carrier groupings...

  12. Legally Best Practices in Section 504 Plans

    ERIC Educational Resources Information Center

    Holler, Rachel; Zirkel, Perry A.

    2008-01-01

    Section 504 is civil rights legislation that is part of the Rehabilitation Act of 1973. Section 504 directly affects public schools, prohibiting discrimination against persons with disabilities. More specifically to students with disabilities, Section 504 provides various procedural protections and, for students, an entitlement to "appropriate…

  13. 14 CFR Section 04 - Air Carrier Groupings

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Air Carrier Groupings Section 04 Section 04... REGULATIONS UNIFORM SYSTEM OF ACCOUNTS AND REPORTS FOR LARGE CERTIFICATED AIR CARRIERS Section 04 Air Carrier Groupings (a) All large certificated air carriers are placed into three basic air carrier groupings...

  14. Turbine Engine Hot Section Technology, 1985

    NASA Technical Reports Server (NTRS)

    1985-01-01

    The Turbine Engine Section Technology (HOST) Project Office of the Lewis Research Center sponsored a workshop to discuss current research pertinent to turbine engine hot section durability problems. Presentations were made concerning hot section environment and the behavior of combustion liners, turbine blades, and turbine vanes.

  15. 28 CFR 55.8 - Relationship between section 4(f)(4) and section 203(c).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 2 2010-07-01 2010-07-01 false Relationship between section 4(f)(4) and....8 Relationship between section 4(f)(4) and section 203(c). (a) The statutory requirements of section 4(f)(4) and section 203(c) regarding minority language material and assistance are...

  16. 28 CFR 55.8 - Relationship between section 4(f)(4) and section 203(c).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 2 2014-07-01 2014-07-01 false Relationship between section 4(f)(4) and....8 Relationship between section 4(f)(4) and section 203(c). (a) The statutory requirements of section 4(f)(4) and section 203(c) regarding minority language material and assistance are...

  17. 28 CFR 55.8 - Relationship between section 4(f)(4) and section 203(c).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 2 2013-07-01 2013-07-01 false Relationship between section 4(f)(4) and....8 Relationship between section 4(f)(4) and section 203(c). (a) The statutory requirements of section 4(f)(4) and section 203(c) regarding minority language material and assistance are...

  18. Recent fission cross section standards measurements

    SciTech Connect

    Wasson, O.A.

    1985-01-01

    The /sup 235/U(n,f) reaction is the standard by which most neutron induced fission cross sections are determined. Most of these cross sections are derived from relatively easy ratio measurements to /sup 235/U. However, the more difficult /sup 235/U(n,f) cross section measurements require the use of advanced neutron detectors for the determination of the incident neutron fluence. Examples of recent standard cross section measurements are discussed, various neutron detectors are described, and the status of the /sup 235/U(n,f) cross section standard is assessed. 23 refs., 8 figs., 4 tabs.

  19. SNL RML recommended dosimetry cross section compendium

    SciTech Connect

    Griffin, P.J.; Kelly, J.G.; Luera, T.F.; VanDenburg, J.

    1993-11-01

    A compendium of dosimetry cross sections is presented for use in the characterization of fission reactor spectrum and fluence. The contents of this cross section library are based upon the ENDF/B-VI and IRDF-90 cross section libraries and are recommended as a replacement for the DOSCROS84 multigroup library that is widely used by the dosimetry community. Documentation is provided on the rationale for the choice of the cross sections selected for inclusion in this library and on the uncertainty and variation in cross sections presented by state-of-the-art evaluations.

  20. An evaluation of three helicopter rotor sections

    NASA Technical Reports Server (NTRS)

    Hicks, R. M.; Collins, L. J.

    1985-01-01

    Three helicopter rotor sections were tested in the NASA Ames Research Center 2- by 2-Foot Transonic Wind Tunnel over a Mach range from 0.2 to 0.88. The sections tested had maximum thickness/chord ratios of 0.078, 0.09, and 0.10. The thickest section was of early technology and had been tested previously in other wind tunnels. This section was included in the investigation to establish a basis for comparing the two thinner sections, which were of recent design. The results of the investigation showed that the pitching-moment characteristics for the three airfoil sections were acceptable. The drag divergence Mach numbers for the three sections were 0.80, 0.825, and 0.845 in order of decreasing thickness.

  1. Section CC PreRehabilitation 2009; Section DD PostRehabilitation Gilpin's Falls ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Section C-C Pre-Rehabilitation 2009; Section D-D Post-Rehabilitation - Gilpin's Falls Covered Bridge, Spanning North East Creek at Former (Bypassed) Section of North East Road (SR 272), North East, Cecil County, MD

  2. 77 FR 34927 - National Pollutant Discharge Elimination System-Proposed Regulations To Establish Requirements...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-12

    ... under section 316(b) of the Clean Water Act (CWA), at 76 FR 22174. EPA received voluminous comments and... (76 FR 43230). In today's NODA, EPA is providing additional preliminary data that may be relevant to... Consideration section of EPA's proposal (76 FR 22174, Section VI). This notice is intended only to...

  3. Vertically stabilized elongated cross-section tokamak

    DOEpatents

    Sheffield, George V.

    1977-01-01

    This invention provides a vertically stabilized, non-circular (minor) cross-section, toroidal plasma column characterized by an external separatrix. To this end, a specific poloidal coil means is added outside a toroidal plasma column containing an endless plasma current in a tokamak to produce a rectangular cross-section plasma column along the equilibrium axis of the plasma column. By elongating the spacing between the poloidal coil means the plasma cross-section is vertically elongated, while maintaining vertical stability, efficiently to increase the poloidal flux in linear proportion to the plasma cross-section height to achieve a much greater plasma volume than could be achieved with the heretofore known round cross-section plasma columns. Also, vertical stability is enhanced over an elliptical cross-section plasma column, and poloidal magnetic divertors are achieved.

  4. Annular-Cross-Section CFE Chamber

    NASA Technical Reports Server (NTRS)

    Sharnez, Rizwan; Sammons, David W.

    1994-01-01

    Proposed continuous-flow-electrophoresis (CFE) chamber of annular cross section offers advantages over conventional CFE chamber, and wedge-cross-section chamber described in "Increasing Sensitivity in Continuous-Flow Electrophoresis" (MFS-26176). In comparison with wedge-shaped chamber, chamber of annular cross section virtually eliminates such wall effects as electro-osmosis and transverse gradients of velocity. Sensitivity enhanced by incorporating gradient maker and radial (collateral) flow.

  5. Cross Sections for Electron Collisions with Methane

    SciTech Connect

    Song, Mi-Young Yoon, Jung-Sik; Cho, Hyuck; Itikawa, Yukikazu; Karwasz, Grzegorz P.; Kokoouline, Viatcheslav; Nakamura, Yoshiharu; Tennyson, Jonathan

    2015-06-15

    Cross section data are compiled from the literature for electron collisions with methane (CH{sub 4}) molecules. Cross sections are collected and reviewed for total scattering, elastic scattering, momentum transfer, excitations of rotational and vibrational states, dissociation, ionization, and dissociative attachment. The data derived from swarm experiments are also considered. For each of these processes, the recommended values of the cross sections are presented. The literature has been surveyed through early 2014.

  6. Theoretical antideuteron-nucleus absorptive cross sections

    NASA Technical Reports Server (NTRS)

    Buck, W. W.; Norbury, J. W.; Townsend, L. W.; Wilson, J. W.

    1993-01-01

    Antideuteron-nucleus absorptive cross sections for intermediate to high energies are calculated using an ion-ion optical model. Good agreement with experiment (within 15 percent) is obtained in this same model for (bar p)-nucleus cross sections at laboratory energies up to 15 GeV. We describe a technique for estimating antinucleus-nucleus cross sections from NN data and suggest that further cosmic ray studies to search for antideuterons and other antinuclei be undertaken.

  7. The Golden Section as Optical Limitation

    PubMed Central

    Friedel, Jonas; Brodsky, Jennifer

    2015-01-01

    The golden section, ϕ = (1 + √5)/2 = 1.618… and its companion ϕ = 1/ϕ = ϕ -1 = 0.618…, are irrational numbers which for centuries were believed to confer aesthetic appeal. In line with the presence of golden sectioning in natural growth patterns, recent EEG recordings show an absence of coherence between brain frequencies related by the golden ratio, suggesting the potential relevance of the golden section to brain dynamics. Using Mondrian-type patterns comprising a number of paired sections in a range of five section-section areal ratios (including golden-sectioned pairs), participants were asked to indicate as rapidly and accurately as possible the polarity (light or dark) of the smallest section in the patterns. They were also asked to independently assess the aesthetic appeal of the patterns. No preference was found for golden-sectioned patterns, while reaction times (RTs) tended to decrease overall with increasing ratio independently of each pattern’s fractal dimensionality. (Fractal dimensionality was unrelated to ratio and measured in terms of the Minkowski-Bouligand box-counting dimension). The ease of detecting the smallest section also decreased with increasing ratio, although RTs were found to be substantially slower for golden-sectioned patterns under 8-paired sectioned conditions. This was confirmed by a significant linear relationship between RT and ratio (p <.001) only when the golden-sectioned RTs were excluded [the relationship was non-significant for the full complement of ratios (p = .217)]. Image analysis revealed an absence of spatial frequencies between 4 and 8 cycles-per-degree that was exclusive to the 8-paired (golden)-sectioned patterns. The significance of this was demonstrated in a subsequent experiment by addition of uniformly distributed random noise to the patterns. This provided a uniform spatial-frequency profile for all patterns, which did not influence the decrease in RT with increasing ratio but abolished the elevated

  8. Heat exchanger with a removable tube section

    DOEpatents

    Wolowodiuk, W.; Anelli, J.

    1975-07-29

    A heat exchanger is described in which the tube sheet is secured against primary liquid pressure, but which allows for easy removal of the tube section. The tube section is supported by a flange which is secured by a number of shear blocks, each of which extends into a slot which is immovable with respect to the outer shell of the heat exchanger. (auth)

  9. Neutrino flux predictions for cross section measurements

    SciTech Connect

    Hartz, Mark

    2015-05-15

    Experiments that measure neutrino interaction cross sections using accelerator neutrino sources require a prediction of the neutrino flux to extract the interaction cross section from the measured neutrino interaction rate. This article summarizes methods of estimating the neutrino flux using in-situ and ex-situ measurements. The application of these methods by current and recent experiments is discussed.

  10. AFS Estuaries Section - A Successful Partnership

    EPA Science Inventory

    The Estuaries Section of the American Fisheries Society offers travel awards to students in support of their attendance and presentations at the AFS meeting. Since 2007, the Southern Association of Marine Laboratories has partnered with the Estuaries Section to sponsor two stude...

  11. 40 CFR 86.1204 - Section numbering.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 20 2012-07-01 2012-07-01 false Section numbering. 86.1204 Section 86.1204 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES (CONTINUED) Evaporative...

  12. 40 CFR 86.1204 - Section numbering.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 19 2011-07-01 2011-07-01 false Section numbering. 86.1204 Section 86.1204 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES (CONTINUED) Evaporative...

  13. 40 CFR 86.1204 - Section numbering.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 20 2013-07-01 2013-07-01 false Section numbering. 86.1204 Section 86.1204 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES (CONTINUED) Evaporative...

  14. New species in Aspergillus section Terrei

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Aspergillus section Terrei is reviewed and revised using information from DNA sequences, extrolite examination, and phenotypic assessment in an integrated analysis. The taxonomic status of six species from the section is modified either by describing new species or by providing new names for previou...

  15. Online Teaching Resources: A New Journal Section.

    ERIC Educational Resources Information Center

    Sosin, Kim; Becker, William E.

    2000-01-01

    Introduces the Online section in the "Journal of Economic Education" that identifies exemplary interactive material for teaching and learning economics. Describes the selections for the section in this issue of the journal and states that the featured Web sites illustrate important direction for teaching using hypermedia and computer-assisted…

  16. Absolute partial photoionization cross sections of ozone.

    SciTech Connect

    Berkowitz, J.; Chemistry

    2008-04-01

    Despite the current concerns about ozone, absolute partial photoionization cross sections for this molecule in the vacuum ultraviolet (valence) region have been unavailable. By eclectic re-evaluation of old/new data and plausible assumptions, such cross sections have been assembled to fill this void.

  17. OCEAN DISCHARGE CRITERIA DATABASE (CWA SECTION 403)

    EPA Science Inventory

    Resource Purpose:Under Section 402 of the CWA, NPDES permits addressing discharges to the ocean can be obtained. Also under the NPDES program, facilities that discharge beyond the baseline must obtain in addition to NPDES permit under CWA Section 402, that permit must also...

  18. Preparing School Personnel to Implement Section 504

    ERIC Educational Resources Information Center

    Shaw, Stan F.; Madaus, Joseph W.

    2008-01-01

    Section 504 of the Rehabilitation Act of 1973 has become an increasingly important mechanism in providing services to students with disabilities in public schools. Because Section 504 is a civil rights law, responsibility for its implementation involves a range of school-based professionals, including administrators, general education teachers,…

  19. General Potential Theory of Arbitrary Wing Sections

    NASA Technical Reports Server (NTRS)

    Theodorsen, T.; Garrick, I. E.

    1979-01-01

    The problem of determining the two dimensional potential flow around wing sections of any shape is examined. The problem is condensed into the compact form of an integral equation capable of yielding numerical solutions by a direct process. An attempt is made to analyze and coordinate the results of earlier studies relating to properties of wing sections. The existing approximate theory of thin wing sections and the Joukowski theory with its numerous generalizations are reduced to special cases of the general theory of arbitrary sections, permitting a clearer perspective of the entire field. The method which permits the determination of the velocity at any point of an arbitrary section and the associated lift and moments is described. The method is also discussed in terms for developing new shapes of preassigned aerodynamical properties.

  20. Surface Hold Advisor Using Critical Sections

    NASA Technical Reports Server (NTRS)

    Law, Caleb Hoi Kei (Inventor); Hsiao, Thomas Kun-Lung (Inventor); Mittler, Nathan C. (Inventor); Couluris, George J. (Inventor)

    2013-01-01

    The Surface Hold Advisor Using Critical Sections is a system and method for providing hold advisories to surface controllers to prevent gridlock and resolve crossing and merging conflicts among vehicles traversing a vertex-edge graph representing a surface traffic network on an airport surface. The Advisor performs pair-wise comparisons of current position and projected path of each vehicle with other surface vehicles to detect conflicts, determine critical sections, and provide hold advisories to traffic controllers recommending vehicles stop at entry points to protected zones around identified critical sections. A critical section defines a segment of the vertex-edge graph where vehicles are in crossing or merging or opposite direction gridlock contention. The Advisor detects critical sections without reference to scheduled, projected or required times along assigned vehicle paths, and generates hold advisories to prevent conflicts without requiring network path direction-of-movement rules and without requiring rerouting, rescheduling or other network optimization solutions.

  1. 40 CFR 125.82 - When must I comply with this subpart?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Applicable to Cooling Water Intake Structures for New Facilities Under Section 316(b) of the Act § 125.82... 40 Protection of Environment 22 2011-07-01 2011-07-01 false When must I comply with this subpart? 125.82 Section 125.82 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)...

  2. 40 CFR 125.82 - When must I comply with this subpart?

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Applicable to Cooling Water Intake Structures for New Facilities Under Section 316(b) of the Act § 125.82... 40 Protection of Environment 23 2012-07-01 2012-07-01 false When must I comply with this subpart? 125.82 Section 125.82 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)...

  3. 40 CFR 125.82 - When must I comply with this subpart?

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Applicable to Cooling Water Intake Structures for New Facilities Under Section 316(b) of the Act § 125.82... 40 Protection of Environment 22 2014-07-01 2013-07-01 true When must I comply with this subpart? 125.82 Section 125.82 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)...

  4. 40 CFR 125.82 - When must I comply with this subpart?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Applicable to Cooling Water Intake Structures for New Facilities Under Section 316(b) of the Act § 125.82... 40 Protection of Environment 21 2010-07-01 2010-07-01 false When must I comply with this subpart? 125.82 Section 125.82 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)...

  5. 40 CFR 125.82 - When must I comply with this subpart?

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Applicable to Cooling Water Intake Structures for New Facilities Under Section 316(b) of the Act § 125.82... 40 Protection of Environment 23 2013-07-01 2013-07-01 false When must I comply with this subpart? 125.82 Section 125.82 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)...

  6. Fluoroscopic tomography. [for body section synthesis

    NASA Technical Reports Server (NTRS)

    Baily, N. A.; Crepeau, R. L.; Lasser, E. C.

    1974-01-01

    A fluoroscopic tomography system capable of synthesizing body sections at a number of levels within the body has been developed. The synthesized body sections may lie either in a range of planes parallel to, tilted with respect to, skewed with respect to, or both tilted and skewed with respect to the plane of motion of the X-ray tube target. In addition, body sections can be presented which are contoured to the patient's anatomy. That is to say, they may even encompass such complex surfaces as a quadratic hyperplane. In addition, tomograms of organs in motion can be imaged.

  7. Nucleon-Nucleon Total Cross Section

    NASA Technical Reports Server (NTRS)

    Norbury, John W.

    2008-01-01

    The total proton-proton and neutron-proton cross sections currently used in the transport code HZETRN show significant disagreement with experiment in the GeV and EeV energy ranges. The GeV range is near the region of maximum cosmic ray intensity. It is therefore important to correct these cross sections, so that predictions of space radiation environments will be accurate. Parameterizations of nucleon-nucleon total cross sections are developed which are accurate over the entire energy range of the cosmic ray spectrum.

  8. Revised cross section for RHIC dipole magnets

    SciTech Connect

    Thompson, P.A.; Gupta, R.C.; Kahn, S.A.; Hahn, H.; Morgan, G.H.; Wanderer, P.J.; Willen, E.

    1991-01-01

    Using the experience gained in designing and building Relativistic Heavy Ion Collider (RHIC) dipole prototype magnets an improved cross section has been developed. Significant features of this design include the use of only three wedges for field shaping and wedge cross sections which are sectors of an annulus. To aid in the understanding of the actual magnets, one has been sectioned, and detailed mechanical and photographic measurements made of the wire positions. The comparison of these measurements with the magnetic field measurements will is presented. 2 refs, 3 figs., 2 tabs.

  9. Cross Section Evaluations for Arsenic Isotopes

    SciTech Connect

    Pruet, J; McNabb, D P; Ormand, W E

    2005-03-10

    The authors present an evaluation of cross sections describing reactions with neutrons incident on the arsenic isotopes with mass numbers 75 and 74. Particular attention is paid to (n,2n) reactions. The evaluation for {sup 75}As, the only stable As isotope, is guided largely by experimental data. Evaluation for {sup 74}As is made through calculations with the EMPIRE statistical-model reaction code. Cross sections describing the production and destruction of the 26.8 ns isomer in {sup 74}As are explicitly considered. Uncertainties and covariances in some evaluated cross sections are also estimated.

  10. Section 508 Electronic Documents: Best Practices

    NASA Video Gallery

    Section 508 training video on Best Practices for Electronic Documents. This video is part of a series of training sessions that was delivered at Ames Research Center on November 1st, 2011 by Antoni...

  11. Section 508 Electronic Documents: Making Word Docs

    NASA Video Gallery

    Section 508 training video for Electronic Documents on making Word documents accessible for conversion to PDF. This video is part of a series of training sessions that was delivered at Ames Researc...

  12. Planning a DSN support section technical library

    NASA Technical Reports Server (NTRS)

    Bailey, T.; Chatburn, C. C.

    1980-01-01

    The planning procedure being used to establish a technical library for the Deep Space Network support section is described. The inventory and survey methods employed are described and the preliminary results of these methods are discussed.

  13. Impact evaluation of composite floor sections

    NASA Technical Reports Server (NTRS)

    Boitnott, Richard L.; Fasanella, Edwin L.

    1989-01-01

    Graphite-epoxy floor sections representative of aircraft fuselage construction were statically and dynamically tested to evaluate their response to crash loadings. These floor sections were fabricated using a frame-stringer design typical of present aluminum aircraft without features to enhance crashworthiness. The floor sections were tested as part of a systematic research program developed to study the impact response of composite components of increasing complexity. The ultimate goal of the research program is to develop crashworthy design features for future composite aircraft. Initially, individual frames of six-foot diameter were tested both statically and dynamically. The frames were then used to construct built-up floor sections for dynamic tests at impact velocities of approximately 20 feet/sec to simulate survivable crash velocities. In addition, static tests were conducted to gain a better understanding of the failure mechanisms seen in the dynamic tests.

  14. A nuclear cross section data handbook

    SciTech Connect

    Fisher, H.O.M.

    1989-12-01

    Isotopic information, reaction data, data availability, heating numbers, and evaluation information are given for 129 neutron cross-section evaluations, which are the source of the default cross sections for the Monte Carlo code MCNP. Additionally, pie diagrams for each nuclide displaying the percent contribution of a given reaction to the total cross section are given at 14 MeV, 1 MeV, and thermal energy. Other information about the evaluations and their availability in continuous-energy, discrete-reaction, and multigroup forms is provided. The evaluations come from ENDF/B-V, ENDL85, and the Los Alamos Applied Nuclear Science Group T-2. Graphs of all neutron and photon production cross-section reactions for these nuclides have been categorized and plotted. 21 refs., 5 tabs.

  15. The radar cross section of dielectric disks

    NASA Technical Reports Server (NTRS)

    Levine, D. M.

    1982-01-01

    A solution is presented for the backscatter (nonstatic) radar cross section of dielectric disks of arbitrary shape, thickness and dielectric constant. The result is obtained by employing a Kirchhoff type approximation to obtain the fields inside the disk. The internal fields induce polarization and conduction currents from which the scattered fields and the radar cross section can be computed. The solution for the radar cross section obtained in this manner is shown to agree with known results in the special cases of normal incidence, thin disks and perfect conductivity. The solution can also be written as a product of the reflection coefficient of an identically oriented slab times the physical optics solution for the backscatter cross section of a perfectly conducting disk of the same shape. This result follows directly from the Kirchhoff type approximation without additional assumptions.

  16. Evolutionary relationships in Vaccinium section Cyanococcus

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The North American Vaccinium section Cyanococcus includes the ecologically and economically important blueberry species, Vaccinium corymbosum (highbush blueberry), Vaccinium angustifolium (lowbush blueberry), Vaccinium myrtilloides (velvet-leaf blueberry), and Vaccinium virgatum (rabbiteye blueberry...

  17. Applied technology section. Monthly report, December 1993

    SciTech Connect

    Buckner, M.R.

    1994-01-28

    This monthly report contains abstracts of the progress made in various projects from the applied technology section at the Savannah River Plant. Research areas include engineering modeling and simulation, applied physics, experimental thermal hydraulics, and packaging and transportation.

  18. Bibliography of photoabsorption cross-section data

    NASA Technical Reports Server (NTRS)

    Hudson, R. D.; Kieffer, L. J.

    1970-01-01

    This bibliography contains only references which report a measured or calculated photoabsorption cross section (relative or normalized) in regions of continuous absorption. The bibliography is current as of January 1, 1970.

  19. Absorption cross section of canonical acoustic holes

    SciTech Connect

    Crispino, Luis C. B.; Oliveira, Ednilton S.; Matsas, George E. A.

    2007-11-15

    We compute numerically the absorption cross section of a canonical acoustic hole for sound waves with arbitrary frequencies. Our outputs are in full agreement with the expected low- and high-frequency limits.

  20. International Evaluation of Neutron Cross Section Standards

    NASA Astrophysics Data System (ADS)

    Carlson, A. D.; Pronyaev, V. G.; Smith, D. L.; Larson, N. M.; Chen, Zhenpeng; Hale, G. M.; Hambsch, F.-J.; Gai, E. V.; Oh, Soo-Youl; Badikov, S. A.; Kawano, T.; Hofmann, H. M.; Vonach, H.; Tagesen, S.

    2009-12-01

    Neutron cross section standards are the basis for the determination of most neutron cross sections. They are used for both measurements and evaluations of neutron cross sections. Not many cross sections can be obtained absolutely - most cross sections are measured relative to the cross section standards and converted using evaluations of the standards. The previous complete evaluation of the neutron cross section standards was finished in 1987 and disseminated as the NEANDC/INDC and ENDF/B-VI standards. R-matrix model fits for the light elements and non-model least-squares fits for all the cross sections in the evaluation were the basis of the combined fits for all of the data. Some important reactions and constants are not standards, but they assist greatly in the determination of the standard cross sections and reduce their uncertainties - these data were also included in the combined fits. The largest experimental database used in the evaluation was prepared by Poenitz and included about 400 sets of experimental data with covariance matrices of uncertainties that account for all cross-energy, cross-reaction and cross-material correlations. For the evaluation GMA, a least-squares code developed by Poenitz, was used to fit all types of cross sections (absolute and shape), their ratios, spectrum-averaged cross sections and thermal constants in one full analysis. But, the uncertainties derived in this manner, and especially those obtained in the R-matrix model fits, have been judged to be too low and unrealistic. These uncertainties were substantially increased prior to their release in the recommended data files of 1987. Modified percentage uncertainties were reassigned by the United States Cross Section Evaluation Working Group's Standards Subcommittee for a wide range of energies, and no covariance (or correlation) matrices were supplied at that time. The need to re-evaluate the cross section standards is based on the appearance of a significant amount of precise

  1. MODELING AND FISSION CROSS SECTIONS FOR AMERICIUM.

    SciTech Connect

    ROCHMAN, D.; HERMAN, M.; OBLOZINSKY, P.

    2005-05-01

    This is the final report of the work performed under the LANL contract on the modeling and fission cross section for americium isotopes (May 2004-June 2005). The purpose of the contract was to provide fission cross sections for americium isotopes with the nuclear reaction model code EMPIRE 2.19. The following work was performed: (1) Fission calculations capability suitable for americium was implemented to the EMPIRE-2.19 code. (2) Calculations of neutron-induced fission cross sections for {sup 239}Am to {sup 244g}Am were performed with EMPIRE-2.19 for energies up to 20 MeV. For the neutron-induced reaction of {sup 240}Am, fission cross sections were predicted and uncertainties were assessed. (3) Set of fission barrier heights for each americium isotopes was chosen so that the new calculations fit the experimental data and follow the systematics found in the literature.

  2. Section 508 Awareness Part 2 of 3: Why Section 508 is Important?

    NASA Video Gallery

    Section 508 Awareness training video. This video is part of a series of training sessions that was delivered at Ames Research Center on November 1st, 2011 by Antonio HaileSelassie, the Section 508 ...

  3. Building Sections and Detailed Wall Sections U.S. Veterans Hospital, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Building Sections and Detailed Wall Sections - U.S. Veterans Hospital, Jefferson Barracks, Therapeutic Exercise Building, VA Medical Center, Jefferson Barracks Division 1 Jefferson Barracks Drive, Saint Louis, Independent City, MO

  4. Microwave Transmitter With Multimode Output Section

    NASA Technical Reports Server (NTRS)

    Hoppe, Daniel J.; Bhanji, Alaudin M.; Cormier, Reginald A.

    1988-01-01

    Output-waveguide structure transports 400 kW of continuous-wave signal power at 34.5 GHz. Transmitter generates 400 kW of continuous-wave (CW) signal power. Main feature of conceptual design of this microwave transmitter is output section. Output waveguide structure includes mode converter, directional coupler, polarization monitor, and corrugated overmoded output section. Output directional pattern suitable for antenna illumination without flared feedhorn.

  5. Reaction cross sections of unstable nuclei

    SciTech Connect

    Ozawa, Akira

    2006-11-02

    Experimental studies on reaction cross sections are reviewed. The recent developments of radioactive nuclear beams have enabled us to measure reaction cross-sections for unstable nuclei. Using Glauber-model analysis, effective nuclear matter density distributions of unstable nuclei can be studied. Recent measurements in RIBLL at IMP and RIPS at RIKEN are introduced. The effective matter density distributions for 14-18C are also mentioned.

  6. Shuttle orbiter radar cross-sectional analysis

    NASA Technical Reports Server (NTRS)

    Cooper, D. W.; James, R.

    1979-01-01

    Theoretical and model simulation studies on signal to noise levels and shuttle radar cross section are described. Pre-mission system calibrations, system configuration, and postmission system calibration of the tracking radars are described. Conversion of target range, azimuth, and elevation into radar centered east north vertical position coordinates are evaluated. The location of the impinging rf energy with respect to the target vehicles body axis triad is calculated. Cross section correlation between the two radars is presented.

  7. Torsion and buckling of open sections

    NASA Technical Reports Server (NTRS)

    Wagner, Herbert

    1936-01-01

    In this paper is a discussion of the general principles for open sections of any shape. In what follows the torsion will be computed and on the basis of the results it will be possible to obtain a proper design of section in each case. The torsion of buckling members for the case where they are centrally loaded, leads to a problem in pure stability and is similar to that of stressed beams.

  8. Path forward for dosimetry cross sections

    SciTech Connect

    Griffin, P.J.; Peters, C.D.

    2011-07-01

    In the 1980's the dosimetry community embraced the need for a high fidelity quantification of uncertainty in nuclear data used for dosimetry applications. This led to the adoption of energy-dependent covariance matrices as the accepted manner of quantifying the uncertainty data. The trend for the dosimetry community to require high fidelity treatment of uncertainty estimates has continued to the current time where requirements on nuclear data are codified in standards such as ASTM E 1018. This paper surveys the current state of the dosimetry cross sections and investigates the quality of the current dosimetry cross section evaluations by examining calculated-to-experimental ratios in neutron benchmark fields. In recent years more nuclear-related technical areas are placing an emphasis on uncertainty quantification. With the availability of model-based cross sections and covariance matrices produced by nuclear data codes, some nuclear-related communities are considering the role these covariance matrices should play. While funding within the dosimetry community for cross section evaluations has been very meager, other areas, such as the solar-related astrophysics community and the US Nuclear Criticality Safety Program, have been supporting research in the area of neutron cross sections. The Cross Section Evaluation Working Group (CSEWG) is responsible for the creation and maintenance of the ENDF/B library which has been the mainstay for the reactor dosimetry community. Given the new trends in cross section evaluations, this paper explores the path forward for the US nuclear reactor dosimetry community and its use of the ENDF/B cross-sections. The major concern is maintenance of the sufficiency and accuracy of the uncertainty estimate when used for dosimetry applications. The two major areas of deficiency in the proposed ENDF/B approach are: 1) the use of unrelated covariance matrices in ENDF/B evaluations and 2) the lack of 'due consideration' of experimental data

  9. Turbine Engine Hot Section Technology (HOST) Project

    NASA Technical Reports Server (NTRS)

    Sokolowski, Daniel E.; Ensign, C. Robert

    1986-01-01

    The Hot Section Technology (HOST) Project is a NASA-sponsored endeavor to improve the durability of advanced gas turbine engines for commercial and military aircraft. Through improvements in the analytical models and life prediction systems, designs for future hot section components, the combustor and turbine, will be more accurately analyzed and will incorporate features required for longer life in the more hostile operating environment of high performance engines.

  10. Ultraviolet absorption cross sections of hydrogen peroxide

    NASA Technical Reports Server (NTRS)

    Lin, C. L.; Rohatgi, N. K.; Demore, W. B.

    1978-01-01

    Absorption cross-sections of hydrogen peroxide vapor and of neutral aqueous solutions of hydrogen peroxide were measured in the wavelength range from 195 to 350 nm at 296 K. The spectrophotometric procedure is described, and the reported cross-sections are compared with values obtained by other researchers. Photodissociation coefficients of atmospheric H2O2 were calculated for direct absorption of unscattered solar radiation, and the vertical distributions of these coefficients are shown for various solar zenith angles.

  11. QuickSite Cross Section Processing

    Energy Science and Technology Software Center (ESTSC)

    2003-05-27

    This AGEM-developed system produces cross sections by inputting data in both standard and custom file formats and outputting a graphic file that can be printed or further modified in a commercial graphic program. The system has evolved over several years in order to combine and visualize a changing set of field data more rapidly than was possible with commercially available cross section software packages. It uses some commercial packages to produce the input and tomore » modify the output files. Flexibility is provided by a dynamic set of programs that are customized to accept varying input and accomodate varying output requirements. There are two basic types of routines: conversion routines and cross section generation routines. The conversion routines convery various data files to logger file format which is compatible with a standard file format for LogPlot 98, a commonly used commercial log plotting program. The cross section routines generate cross sections and apply topography to these cross sections. All of the generation routines produce a standard graphic DXF file, which is the format used in AutoCAD and can then be modified in a number of available graphics programs.« less

  12. The maximum likelihood dating of magnetostratigraphic sections

    NASA Astrophysics Data System (ADS)

    Man, Otakar

    2011-04-01

    In general, stratigraphic sections are dated by biostratigraphy and magnetic polarity stratigraphy (MPS) is subsequently used to improve the dating of specific section horizons or to correlate these horizons in different sections of similar age. This paper shows, however, that the identification of a record of a sufficient number of geomagnetic polarity reversals against a reference scale often does not require any complementary information. The deposition and possible subsequent erosion of the section is herein regarded as a stochastic process, whose discrete time increments are independent and normally distributed. This model enables the expression of the time dependence of the magnetic record of section increments in terms of probability. To date samples bracketing the geomagnetic polarity reversal horizons, their levels are combined with various sequences of successive polarity reversals drawn from the reference scale. Each particular combination gives rise to specific constraints on the unknown ages of the primary remanent magnetization of samples. The problem is solved by the constrained maximization of the likelihood function with respect to these ages and parameters of the model, and by subsequent maximization of this function over the set of possible combinations. A statistical test of the significance of this solution is given. The application of this algorithm to various published magnetostratigraphic sections that included nine or more polarity reversals gave satisfactory results. This possible self-sufficiency makes MPS less dependent on other dating techniques.

  13. Cutting work in thick section cryomicrotomy.

    PubMed

    Saubermann, A J; Riley, W D; Beeuwkes, R

    1977-09-01

    The forces during cryosectioning were measured using miniature strain gauges attached to a load cell fitted to the drive arm of the Porter-Blum MT-2 cryomicrotome. Work was calculated and the data normalized to a standard (1 mm X 1 mm X 0.5 micrometer) section. Thermal energy generated was also calculated. Five parameters were studied: cutting angle, thickness, temperature, hardness, and block shape. Force patterns could be divided into three major groups thought to represent cutting (Type I), large fracture planes greater than 10 micrometer in length (Type II), and small fracture planes less than 10 micrometer in length (Type III). Type I and Type II produced satisfactory sections. Work in cutting ranged from an average of 78.4 muJ to 568.8 muJ. Cutting angle and temperature had the greatest effect on sectioning. Heat generated would be sufficient to cause through-section melting for 0.5 micrometer thick sections assuming the worst possible case, namely that all heat went into the section without loss. Presence of a Type II pattern (large fracture pattern) is thought to be presumptive evidence against thawing. PMID:606833

  14. Predicting the Total Charm Cross Section

    SciTech Connect

    Vogt, R

    2008-05-29

    We discuss the energy dependence of the total charm cross section and some of its theoretical uncertainties including the quark mass, scale choice and the parton densities. Extracting the total charm cross section from data is a non-trivial task. To go from a finite number of measured D mesons in a particular decay channel to the total c{bar c} cross section one must: divide by the branching ratio for that channel; correct for the luminosity, {sigma}{sub D} = N{sub D}/Lt; extrapolate to full phase space from the finite detector acceptance; divide by two to get the pair cross section from the single Ds; and multiply by a correction factor to account for unmeasured charm hadrons. Early fixed-target data were at rather low p{sub T}, making the charm quark mass the most relevant scale. At proton and ion colliders, although the RHIC experiments can access the full pT range and thus the total cross section, the data reach rather high p{sub T}, p{sub T} >> m, making p{sub T} (m{sub T}) the most relevant scale. Here we focus on the total cross section calculation where the quark mass is the only relevant scale.

  15. FDAMA Section 114: Why the Renewed Interest?

    PubMed

    Perfetto, Eleanor M; Burke, Laurie; Oehrlein, Elisabeth M; Gaballah, Mena

    2015-05-01

    The FDA regulates the use of information by biopharmaceutical companies in their promotional activities. Section 114 of the Food and Drug Administration Modernization Act of 1997 (FDAMA) was specifically designed to allow companies to more readily disseminate health care economic information (HCEI) to those who need it for formulary decision making. However, very little HCEI has been distributed promotionally under this provision over the past 17 years. There are recent discussions by stakeholders regarding the need for updates, revisions, or guidance regarding Section 114.In light of recent renewed interest in Section 114 of the FDAMA, the purpose of this commentary is to equip managed care decision makers with the information they need to understand and respond to industry communications that are governed by Section 114. This commentary reviews and synthesizes the regulatory history and language of the statute and changes to the promotion regulation generated by Section 114. It explores the reasons for the section's limited use to date, for recent renewed interest, and why changes by various stakeholders are suggested at this time. Also discussed is what managed care pharmacists need to know about Section 114, and suggestions are included regarding the active role pharmacists can play in this change process. Renewed interest in FDAMA Section 114 appears to stem largely from the increasingly visible and growing interest in comparative effectiveness research, the emergence of "big data," the expanding range of data sources available for deriving HCEI, and recent court decisions that might indicate a change in the regulatory environment. Various stakeholders are proposing recommendations regarding changes to FDAMA Section 114. Managed care pharmacists should be aware that companies are restricted when communicating HCEI promotional messages; this may mean seeing the use of FDAMA Section 114 as the "competent and reliable" effectiveness standard in promotion. If the

  16. Section Builder: A finite element tool for analysis and design of composite beam cross-sections

    NASA Astrophysics Data System (ADS)

    Chakravarty, Uttam Kumar

    SectionBuilder is an innovative finite element based tool, developed for analysis and design of composite beam cross-sections. The tool can handle the cross-sections with parametric shapes and arbitrary configurations. It can also handle arbitrary lay-ups for predefined beam cross-section geometries in a consistent manner. The material properties for each layer of the cross-section can be defined on the basis of the design requirements. This tool is capable of dealing with multi-cell composite cross-sections with arbitrary lay-ups. It has also the benefit of handling the variation of thickness of skin and D-spars for beams such as rotor blades. A typical cross-section is considered as a collection of interconnected walls. Walls with arbitrary lay-ups based on predefined geometries and material properties are generated first. The complex composite beam cross-sections are developed by connecting the walls using various types of connectors. These connectors are compatible with the walls, i.e., the thickness of the layers of the walls must match with those of the connectors at the place of connection. Cross-sections are often reinforced by core material for constructing realistic rotor blade cross-sections. The tool has the ability to integrate core materials into the cross-sections. A mapped mesh is considered for meshing parametric shapes, walls and various connectors, whereas a free mesh is considered for meshing the core materials. A new algorithm based on the Delaunay refinement algorithm is developed for creating the best possible free mesh for core materials. After meshing the cross-section, the tool determines the sectional properties using finite element analysis. This tool computes sectional properties including stiffness matrix, compliance matrix, mass matrix, and principal axes. A visualization environment is integrated with the tool for visualizing the stress and strain distributions over the cross-section.

  17. A design method for entrance sections of transonic wind tunnels with rectangular cross sections

    NASA Technical Reports Server (NTRS)

    Lionel, L.; Mcdevitt, J. B.

    1975-01-01

    A mathematical technique developed to design entrance sections for transonic or high-speed subsonic wind tunnels with rectangular cross sections is discribed. The transition from a circular cross-section setting chamber to a rectangular test section is accomplished smoothly so as not to introduce secondary flows (vortices or boundary-layer separation) into a uniform test stream. The results of static-pressure measurements in the transition region and of static and total-pressure surveys in the test section of a pilot model for a new facility at the Ames Research Center are presented.

  18. Actinide cross section program at ORELA

    SciTech Connect

    Dabbs, J.W.T.

    1980-01-01

    The actinide cross section program at ORELA, the Oak Ridge Electron Linear Accelerator, is aimed at obtaining accurate neutron cross sections (primarily fission, capture, and total) for actinide nuclides which occur in fission reactors. Such cross sections, measured as a function of neutron energy over as wide a range of energies as feasible, comprise a data base that permits calculated predictions of the formation and removal of these nuclides in reactors. The present program is funded by the Division of Basic Energy Sciences of DOE, and has components in several divisions at ORNL. For intensively ..cap alpha..-active nuclides, many of the existing fission cross section data have been provided by underground explosions. New measurement techniques, developed at ORELA, now permit linac measurements on fissionable nuclides with alpha half-lives as short as 28 years. Capture and capture-plus-fission measurements utilize scintillation detectors (of capture ..gamma.. rays and fission neutrons) in which pulse shape discrimination plays an important role. Total cross sections can be measured at ORELA on samples of only a few milligrams. A simultaneous program of chemical and isotopic analyses of samples irradiated in EBR-II is in progress to provide benchmarks for the existing differential measurements. These analyses are being studied with updated versions of ORIGEN and with sensitivity determinations. Calculations of the sensitivity to cross section changes of various aspects of the nuclear fuel cycle are also being made. Even in this relatively mature field, many cross sections still require improvements to provide an adequate data base. Examples of recent techniques and measurements are presented. 12 figures, 3 tables.

  19. Reduction Methods for Total Reaction Cross Sections

    NASA Astrophysics Data System (ADS)

    Gomes, P. R. S.; Mendes Junior, D. R.; Canto, L. F.; Lubian, J.; de Faria, P. N.

    2016-03-01

    The most frequently used methods to reduce fusion and total reaction excitation functions were investigated in a very recent paper Canto et al. (Phys Rev C 92:014626, 2015). These methods are widely used to eliminate the influence of masses and charges in comparisons of cross sections for weakly bound and tightly bound systems. This study reached two main conclusions. The first is that the fusion function method is the most successful procedure to reduce fusion cross sections. Applying this method to theoretical cross sections of single channel calculations, one obtains a system independent curve (the fusion function), that can be used as a benchmark to fusion data. The second conclusion was that none of the reduction methods available in the literature is able to provide a universal curve for total reaction cross sections. The reduced single channel cross sections keep a strong dependence of the atomic and mass numbers of the collision partners, except for systems in the same mass range. In the present work we pursue this problem further, applying the reduction methods to systems within a limited mass range. We show that, under these circumstances, the reduction of reaction data may be very useful.

  20. Modeling the heavy ion upset cross section

    NASA Astrophysics Data System (ADS)

    Connell, L. W.; McDaniel, P. J.; Prinja, A. K.; Sexton, F. W.

    1995-04-01

    The standard Rectangular Parallelepiped (RPP) construct is used to derive a closed form expression for, sigma-bar (theta, phi, L) the directional-spectral heavy ion upset cross section. This is an expected value model obtained by integrating the point-value cross section model, sigma (theta, phi, L, E), also developed here, with the Weibull density function, f(E), assumed to govern the stochastic behavior of the upset threshold energy, E. A comparison of sigma-bar (theta, phi, L) with experimental data show good agreement, lending strong credibility to the hypothesis that E-randomness is responsible for the shape of the upset cross section curve. The expected value model is used as the basis for a new, rigorous mathematical formulation of the effective cross section concept. The generalized formulation unifies previous corrections to the inverse cosine scaling, collapsing to Petersen's correction, (cos theta - (h/l) sin theta)(sup -1), near threshold and Sexton's, (cos theta + (h/l) sin theta)(sup -1), near saturation. The expected value cross section model therefore has useful applications in both upset rate prediction and test data analysis.

  1. Undergraduate Measurements of Neutron Cross Sections

    NASA Astrophysics Data System (ADS)

    Hicks, S. F.; Vanhoy, J. R.; French, A. J.; Santonil, Z. C.; Crider, B. P.; Peters, E. E.; McEllistrem, M. T.; Prados-Estévez, F. M.; Ross, T. J.; Yates, S. W.

    Undergraduate students at the University of Dallas have investigated basic properties of nuclei through γ-ray and neutron spectroscopy following neutron scattering. The former has been used primarily for nuclear structure investigations, while the latter has been used to measure neutron scattering cross sections important for fission reactor applications. A series of (n,n') and (n,n'γ) measurements have been made on 54Fe and 56Fe to determine neutron cross sections for scattering to excited levels in these nuclei. The former provides the cross sections directly and the latter are used to deduce inelastic neutron scattering cross sections by measuring the γ-ray production cross sections to states not easily resolved in neutron spectroscopy. All measurements have been completed at the University of Kentucky Accelerator Laboratory using a 7-MV Model CN Van de Graaff accelerator, along with the neutron production and neutron and γ-ray detection systems located there. Students participate in accelerator operation, experimental setup, data acquisition, and data analyses. An overview of the research program and student contributions is presented.

  2. 14 CFR Section 19 - Uniform Classification of Operating Statistics

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... Statistics Section 19 Section 19 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION... AIR CARRIERS Operating Statistics Classifications Section 19 Uniform Classification of Operating Statistics...

  3. 14 CFR Section 19 - Uniform Classification of Operating Statistics

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... Statistics Section 19 Section 19 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION... AIR CARRIERS Operating Statistics Classifications Section 19 Uniform Classification of Operating Statistics...

  4. 14 CFR Section 19 - Uniform Classification of Operating Statistics

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Statistics Section 19 Section 19 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION... AIR CARRIERS Operating Statistics Classifications Section 19 Uniform Classification of Operating Statistics...

  5. 14 CFR Section 19 - Uniform Classification of Operating Statistics

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... Statistics Section 19 Section 19 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION... AIR CARRIERS Operating Statistics Classifications Section 19 Uniform Classification of Operating Statistics...

  6. [Caesarean section--indication or choice?].

    PubMed

    Krepelka, P

    2008-10-01

    Currently, caesarean section is the most commonly indicated procedure. The proportion of caesarean deliveries continues to rise. And the spectrum of surgical indications has dramatically broadened. This contemplation is focused on the general outcome of surgical indications. The procedure is indicated on the basis of scientific evidence only in a limited manner, more often it is indicated on the basis of empiric results and significant subjective motivation of the participants - the indicating physician and pregnant patient. There is insufficient proof to conclusively demonstrate an increased or decreased risk of elective caesarean section as compared to a trial of labor. Thus making it ethical and professionally acceptable to perform a caesarean section based on the wish of a competent and well-informed pregnant woman. PMID:19110959

  7. Top differential cross section measurements (Tevatron)

    SciTech Connect

    Jung, Andreas W.

    2012-01-01

    Differential cross sections in the top quark sector measured at the Fermilab Tevatron collider are presented. CDF used 2.7 fb{sup -1} of data and measured the differential cross section as a function of the invariant mass of the t{bar t} system. The measurement shows good agreement with the standard model and furthermore is used to derive limits on the ratio {kappa}/M{sub Pl} for gravitons which decay to top quarks in the Randall-Sundrum model. D0 used 1.0 fb{sup -1} of data to measure the differential cross section as a function of the transverse momentum of the top-quark. The measurement shows a good agreement to the next-to-leading order perturbative QCD prediction and various other standard model predictions.

  8. Vaginal birth after cesarean section: current opinion.

    PubMed

    Weinstein, D; Benshushan, A; Ezra, Y; Rojansky, N

    1996-04-01

    Although the current literature attests to the merits of a trial of labor in the patient with a prior cesarean section, some controversies remain. For example, can women with two or more sections be allowed a trial of labor and can patients who undergo a trial of labor receive oxytocin or prostaglandins for induction? Also, do certain indications for previous cesarean section such as relative cephalopelvic disproportion/failure to progress or the diagnosis of breech or twins in the present pregnancy constitute an indication for elective repeat cesarean delivery? These questions along with some other controversies are discussed in the light of newly accumulated data in the English literature and our own experience over the last decade in a major university-based tertiary medical center. PMID:8737297

  9. The cross section for double Compton scattering

    NASA Technical Reports Server (NTRS)

    Gould, R. J.

    1984-01-01

    Employing elementary methods in nonrelativistic quantum electrodynamics, the cross section for gamma sub 0 + e yields e + gamma + gamma is computed for arbitrary energy in the spectrum of the outgoing photons. The final result is given, differential in the energy of one of these photons, for the case where the incident photon is unpolarized and has energy E sub 0 much less than mc-squared, a polarization sum and angular integration being performed for the final-state photons. The cross section has a simple algebraic form resulting from contributions from the sum of squared direct and exchange amplitudes; interference terms from these amplitudes do not contribute to the angular-integrated cross section.

  10. Algorithmic analysis of quantum radar cross sections

    NASA Astrophysics Data System (ADS)

    Lanzagorta, Marco; Venegas-Andraca, Salvador

    2015-05-01

    Sidelobe structures on classical radar cross section graphs are a consequence of discontinuities in the surface currents. In contrast, quantum radar theory states that sidelobe structures on quantum radar cross section graphs are due to quantum interference. Moreover, it is conjectured that quantum sidelobe structures may be used to detect targets oriented off the specular direction. Because of the high data bandwidth expected from quantum radar, it may be necessary to use sophisticated quantum signal analysis algorithms to determine the presence of stealth targets through the sidelobe structures. In this paper we introduce three potential quantum algorithmic techniques to compute classical and quantum radar cross sections. It is our purpose to develop a computer science-oriented tool for further physical analysis of quantum radar models as well as applications of quantum radar technology in various fields.

  11. DSM-5 section III personality traits and section II personality disorders in a Flemish community sample.

    PubMed

    Bastiaens, Tim; Smits, Dirk; De Hert, Marc; Vanwalleghem, Dominique; Claes, Laurence

    2016-04-30

    The Personality Inventory for DSM-5 (PID-5; Krueger et al., 2012) is a dimensional self-report questionnaire designed to measure personality pathology according to the criterion B of the DSM-5 Section III personality model. In the current issue of DSM, this dimensional Section III personality model co-exists with the Section II categorical personality model derived from DSM-IV-TR. Therefore, investigation of the inter-relatedness of both models across populations and languages is warranted. In this study, we first examined the factor structure and reliability of the PID-5 in a Flemish community sample (N=509) by means of exploratory structural equation modeling and alpha coefficients. Next, we investigated the predictive ability of section III personality traits in relation to section II personality disorders through correlations and stepwise regression analyses. Results revealed a five factor solution for the PID-5, with adequate reliability of the facet scales. The variance in Section II personality disorders could be predicted by their theoretically comprising Section III personality traits, but additional Section III personality traits augmented this prediction. Based on current results, we discuss the Section II personality disorder conceptualization and the Section III personality disorder operationalization. PMID:27086247

  12. Infrared absorption cross sections of alternative CFCs

    NASA Technical Reports Server (NTRS)

    Clerbaux, Cathy; Colin, Reginald; Simon, Paul C.

    1994-01-01

    Absorption cross sections have obtained in the infrared atmospheric window, between 600 and 1500 cm(exp -1), for 10 alternative hydrohalocarbons: HCFC-22, HCFC-123, HCFC-124, HCFC-141b, HCFC-142b, HCFC-225ca, HCFC-225cb, HFC-125, HFC-134a, and HFC-152a. The measurements were made at three temperatures (287K, 270K and 253K) with a Fourier transform spectrometer operating at 0.03 cm(exp -1) apodized resolution. Integrated cross sections are also derived for use in radiative models to calculate the global warming potentials.

  13. Large Geomagnetic Storms: Introduction to Special Section

    NASA Technical Reports Server (NTRS)

    Gopalswamy, N.

    2010-01-01

    Solar cycle 23 witnessed the accumulation of rich data sets that reveal various aspects of geomagnetic storms in unprecedented detail both at the Sun where the storm causing disturbances originate and in geospace where the effects of the storms are directly felt. During two recent coordinated data analysis workshops (CDAWs) the large geomagnetic storms (Dst < or = -100 nT) of solar cycle 23 were studied in order to understand their solar, interplanetary, and geospace connections. This special section grew out of these CDAWs with additional contributions relevant to these storms. Here I provide a brief summary of the results presented in the special section.

  14. Improved cross section calculations for astrophysical applications

    NASA Technical Reports Server (NTRS)

    Silberberg, R.; Tsao, C. H.; Letaw, J. R.

    1985-01-01

    Modifications are proposed for the semiempirical equations and parameters of Silberberg and Tsao (1973) for partial cross section calculations of proton-nucleus reactions in cosmic rays. These modifications include: adjustment of general parameters; modification of energy dependence; effects of nuclear alpha-particle structure, deuteron emission, and even-charged products; peripheral reactions; fission reactions; averaging cross sections near boundaries of different parameters; elimination of certain special cases; and treatment of the Pt to Pb group that cannot yet be generalized to Z(t) less than 76.

  15. Covariance Evaluation Methodology for Neutron Cross Sections

    SciTech Connect

    Herman,M.; Arcilla, R.; Mattoon, C.M.; Mughabghab, S.F.; Oblozinsky, P.; Pigni, M.; Pritychenko, b.; Songzoni, A.A.

    2008-09-01

    We present the NNDC-BNL methodology for estimating neutron cross section covariances in thermal, resolved resonance, unresolved resonance and fast neutron regions. The three key elements of the methodology are Atlas of Neutron Resonances, nuclear reaction code EMPIRE, and the Bayesian code implementing Kalman filter concept. The covariance data processing, visualization and distribution capabilities are integral components of the NNDC methodology. We illustrate its application on examples including relatively detailed evaluation of covariances for two individual nuclei and massive production of simple covariance estimates for 307 materials. Certain peculiarities regarding evaluation of covariances for resolved resonances and the consistency between resonance parameter uncertainties and thermal cross section uncertainties are also discussed.

  16. New Parameterization of Neutron Absorption Cross Sections

    NASA Technical Reports Server (NTRS)

    Tripathi, Ram K.; Wilson, John W.; Cucinotta, Francis A.

    1997-01-01

    Recent parameterization of absorption cross sections for any system of charged ion collisions, including proton-nucleus collisions, is extended for neutron-nucleus collisions valid from approx. 1 MeV to a few GeV, thus providing a comprehensive picture of absorption cross sections for any system of collision pairs (charged or uncharged). The parameters are associated with the physics of the problem. At lower energies, optical potential at the surface is important, and the Pauli operator plays an increasingly important role at intermediate energies. The agreement between the calculated and experimental data is better than earlier published results.

  17. Precise neutron inelastic cross section measurements

    SciTech Connect

    Negret, Alexandru

    2012-11-20

    The design of a new generation of nuclear reactors requires the development of a very precise neutron cross section database. Ongoing experiments performed at dedicated facilities aim to the measurement of such cross sections with an unprecedented uncertainty of the order of 5% or even smaller. We give an overview of such a facility: the Gamma Array for Inelastic Neutron Scattering (GAINS) installed at the GELINA neutron source of IRMM, Belgium. Some of the most challenging difficulties of the experimental approach are emphasized and recent results are shown.

  18. Cross sections of neutron-induced reactions

    SciTech Connect

    Mukhopadhyay, Tapan; Lahiri, Joydev; Basu, D. N.

    2010-10-15

    We study the properties of the neutron-nucleus total and reaction cross sections for several nuclei. We have applied an analytical model, the nuclear Ramsauer model, justified it from the nuclear reaction theory approach, and extracted the values of 12 parameters used in the model. The given parametrization has an advantage as phenomenological optical model potentials are limited up to 150-200 MeV. The present model provides good estimates of the total cross sections for several nuclei particularly at high energies.

  19. Neutron capture cross section of 136 Xe

    NASA Astrophysics Data System (ADS)

    Daugherty, Sean; Albert, Joshua; Johnson, Tessa; O'Conner, Thomasina; Kaufman, Lisa

    2015-04-01

    136 Xe is an important 0 νββ candidate, studied in experiments such as EXO-200 and, in the future, nEXO. These experiments require a precise study of neutron capture for their background models. The neutron capture cross section of 136 Xe has been measured at the Detector for Advanced Capture Experiments (DANCE) at the Los Alamos Neutron Science Center. A neutron beam ranging from thermal energy to 100 keV was incident on a gas cell filled with isotopically pure 136 Xe . We will discuss the measurement of partial neutron capture cross sections at thermal and first neutron resonance energies along with corresponding capture gamma cascades.

  20. Neutron Capture Cross Section of 239Pu

    NASA Astrophysics Data System (ADS)

    Mosby, S.; Arnold, C.; Bredeweg, T. A.; Couture, A.; Jandel, M.; O'Donnell, J. M.; Rusev, G.; Ullmann, J. L.; Chyzh, A.; Henderson, R.; Kwan, E.; Wu, C. Y.

    2014-09-01

    The 239Pu(n,γ) cross section has been measured over the energy range 10 eV - 10 keV using the Detector for Advanced Neutron Capture Experiments (DANCE) as part of a campaign to produce precision (n,γ) measurements on 239Pu in the keV region. Fission coincidences were measured with a PPAC and used to characterize the prompt fission γ-ray spectrum in this region. The resulting spectra will be used to better characterize the fission component of another experiment with a thicker target to extend the (n,γ) cross section measurement well into the keV region.

  1. Optical Model and Cross Section Uncertainties

    SciTech Connect

    Herman,M.W.; Pigni, M.T.; Dietrich, F.S.; Oblozinsky, P.

    2009-10-05

    Distinct minima and maxima in the neutron total cross section uncertainties were observed in model calculations using spherical optical potential. We found this oscillating structure to be a general feature of quantum mechanical wave scattering. Specifically, we analyzed neutron interaction with 56Fe from 1 keV up to 65 MeV, and investigated physical origin of the minima.We discuss their potential importance for practical applications as well as the implications for the uncertainties in total and absorption cross sections.

  2. Essentials in cardiac arrest during cesarean section.

    PubMed

    van Liempt, Susan W J D; Stoecklein, Katrin; Tjiong, Ming Y; Schwarte, Lothar A; de Groot, Christianne J M; Teunissen, Pim W

    2015-01-28

    Cardiac arrest during cesarean section is very rare. Obstetrical teams have low exposure to these critical situations necessitating frequent rehearsal and knowledge of its differential diagnosis and treatment. A 40-year-old woman pregnant with triplets underwent cesarean sections because of vaginal bleeding due to a placenta previa at 35.2 weeks of gestation. Spinal anesthesia was performed. Asystole occurred during uterotomy. Immediate resuscitation and delivery of the neonates eventually resulted in good maternal and neonatal outcomes. The differential diagnosis is essential and should include obstetric and non-obstetric causes. We describe the consideration of Bezold Jarisch reflex and amniotic fluid embolism as most appropriate in this case. PMID:25918626

  3. Turbine Engine Hot Section Technology, 1987

    NASA Technical Reports Server (NTRS)

    1987-01-01

    Presentations were made concerning the development of design analysis tools for combustor liners, turbine vanes, and turbine blades. Presentations were divided into six sections: instrumentation, combustion, turbine heat transfer, structural analysis, fatigue and fracture, surface protective coatings, constitutive behavior of materials, stress-strain response and life prediction methods.

  4. Race, Sex, Section: Reflection or Distortion?

    ERIC Educational Resources Information Center

    Hoover, Judith D.

    Part of a larger rhetorical biography, this essay examines several of the narratives of the southern writer and humorist, Irvin S. Cobb (1876-1944), to understand the unhappy "ordinary experience" of Southern racism and sexism. Following a biographical introduction, the first section discusses Cobb's narratives, while the second deals with Cobb's…

  5. Cross sections relevant to gamma ray astronomy

    NASA Technical Reports Server (NTRS)

    Dyer, P.; Bodansky, D.; Maxson, D. R.

    1978-01-01

    Gamma-ray production cross sections were measured for protons and alpha particles incident on targets consisting of nuclei of high cosmic abundance: C-12, N-14, O-16, Ne-20, Mg-24, Si-28 and Fe-56. Solid or gaseous targets were bombarded by monoenergetic beams of protons and alpha particles, and gamma rays were detected by two Ge(Li) detectors. The proton energy for each target was varied from threshold to about 24 MeV (lab); for alphas the range was from threshold to about 27 MeV. For most transitions, it was possible to measure the total cross section by placing the detectors at 30.5 deg and 109.9 deg where the fourth-order Legendre polynomial is zero. For the case of the 16O (E sub gamma = 6.13 MeV, multipolarity E3) cross sections, yields were measured at four angles. Absolute cross sections were obtained by integrating the beam current and by measuring target thicknesses and detector efficiencies. The Ge(Li) detector resolution was a few keV (although the peak widths were greater, due to Doppler broadening).

  6. Fundamental Rights, Section 504, and Baby Doe.

    ERIC Educational Resources Information Center

    Turnbull, H. Rutherford, III

    1983-01-01

    The author criticizes the positions of the American Acadamy of Pediatrics, the court, and the President's Commission on Medical and Biomedical and Behavioral research regarding the application of section 504 of the Rehabilitation Act of 1973 to newborns with severe birth defects. (CL)

  7. Taxonomic changes in Solanum section Petota

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In 1990, the latest comprehensive taxonomic monograph of Solanum section Petota Dumort. recognized 236 species partitioned into 21 series. Of these, 227 were tuber-bearing and nine non-tuber-bearing. NSF-sponsored research has drastically altered knowledge of their species boundaries and interrelati...

  8. Photoelectric absorption cross sections with variable abundances

    NASA Technical Reports Server (NTRS)

    Balucinska-Church, Monika; Mccammon, Dan

    1992-01-01

    Polynomial fit coefficients have been obtained for the energy dependences of the photoelectric absorption cross sections of 17 astrophysically important elements. These results allow the calculation of X-ray absorption in the energy range 0.03-10 keV in material with noncosmic abundances.

  9. The Section 43 Debate: The Teacher's Perspective.

    ERIC Educational Resources Information Center

    O'Brien, Allan R.; Pietersma, Eric

    2000-01-01

    The constitutionality of section 43 of the Canadian criminal code, which provides a defense to the use of reasonable and corrective force on children, has been challenged. The Canadian Teachers' Federation argues that the case is not about spanking, but about enabling teachers to maintain order and create a positive, effective learning…

  10. Section 8: Affordable Housing for Exceptional Families

    ERIC Educational Resources Information Center

    Wright, Wesley E.

    2009-01-01

    Shelter is a basic human need. Unfortunately, affordable housing is a need that low income families who are caring for children and adults with disabilities can rarely afford without assistance. Because participating families generally pay rent of no more than 30 percent of their adjusted monthly income, the Section 8 program can provide…

  11. Cross Sections From Scalar Field Theory

    NASA Technical Reports Server (NTRS)

    Norbury, John W.; Dick, Frank; Norman, Ryan B.; Nasto, Rachel

    2008-01-01

    A one pion exchange scalar model is used to calculate differential and total cross sections for pion production through nucleon- nucleon collisions. The collisions involve intermediate delta particle production and decay to nucleons and a pion. The model provides the basic theoretical framework for scalar field theory and can be applied to particle production processes where the effects of spin can be neglected.

  12. Sectioning Clay Models Makes Anatomy & Development Tangible

    ERIC Educational Resources Information Center

    Howell, Carina Endres; Howell, James Endres

    2010-01-01

    Clay models have proved to be useful teaching aids for many topics in biology that depend on three-dimensional reasoning. Students studying embryonic development struggle to mentally reconstruct the three-dimensional structure of embryos and larvae by observing prepared slides of cross-sectional slices. Students who build clay models of embryos…

  13. 76 FR 12760 - Section 302 Report

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-08

    ... From the Federal Register Online via the Government Publishing Office LIBRARY OF CONGRESS Copyright Office Section 302 Report AGENCY: Copyright Office, Library of Congress. ACTION: Notice of inquiry... Inquiry seeking comments for a report to Congress addressing possible recommendations for phasing out...

  14. Recognition of regions in brain sections.

    PubMed

    Waks, A; Tretiak, O J

    1990-01-01

    This paper addresses the problem of region identification in sequential brain sections and presents a recognition system that finds and tracks region boundaries in those sections. The characteristics of the areas of interest are unique in one sense because they are not stationary. Some regions are hardly discernible. In others, parts of the boundary are missing or so completely blurred that parts of the background may be considered as an extension of the region itself. Moreover, outliers are likely to exist in many cases. Due to the unique properties of brain regions, the emphasis is on robustification and efficiency. The region segmentation problem was expressed as a multi-hypothesis test seeking boundaries that maximize a performance criterion which is general in terms of blur and noise. Boundary candidates are restricted to an adaptive search area around a reference boundary which is usually the outcome of the algorithm from the previous section. The search for the maximum criterion uses a fast first order dynamic programing (DP) procedure, reducing the processing time. Outlier rejection techniques are integrated with the multi-hypothesis test to compensate for both outliers and noise. The result is the reference for the next section. Experimental results on boundary detection are presented. The algorithm is successful in tracing boundaries when the contrast is smaller than the noise power, and when parts of the outlines are missing. PMID:2224832

  15. Special Section: Cognition and Instruction in Mathematics.

    ERIC Educational Resources Information Center

    Mayer, Richard E., Ed.

    1989-01-01

    This special section on cognition and mathematics contains an introduction and 13 articles on advances in the psychology of mathematics learning. The articles focus on how students learn to solve mathematics problems, including arithmetic computation problems, arithmetic word problems, and computer programing problems. (SLD)

  16. Asia Section. Regional Activities Division. Paper.

    ERIC Educational Resources Information Center

    International Federation of Library Associations, The Hague (Netherlands).

    Two papers on library and information activities in developing nations, particularly in India and other Asian countries, were presented at the 1983 International Federation of Library Associations (IFLA) conference. In "IFLA in Asia: A Review of the Work of the Regional Section for Asia," Edward Lim Huck Tee (Malaysia) describes the low level of…

  17. 76 FR 27091 - Section 302 Report

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-10

    ... comments on issues related to Section 302. 76 FR 11816 (March 3, 2011). The Office announces that it will... Copyright Act will be held on Friday, June 10, 2011. Notices of intention to testify must be received by the... Accountability Office and the FCC to conduct studies and report findings to Congress on different structural...

  18. Testing (Validating?) Cross Sections with ICSBEP Benchmarks

    SciTech Connect

    Kahler, Albert C. III

    2012-06-28

    We discuss how to use critical benchmarks from the International Handbook of Evaluated Criticality Safety Benchmark Experiments to determine the applicability of specific cross sections to the end-user's problem of interest. Particular attention is paid to making sure the selected suite of benchmarks includes the user's range of applicability (ROA).

  19. General Potential Theory of Arbitrary Wing Section

    NASA Technical Reports Server (NTRS)

    Theodorsen, T; Garrick, I E

    1934-01-01

    This report gives the exact treatment of the problem of determining the 2-dimensional potential flow around wing sections of any type. The treatment is based directly on the solution of this problem as advanced by Theodorsen in NACA-TR-411. The problem condenses into the compact form of an integral equation capable of yielding numerical solutions by a direct process.

  20. TESOL CALL Interest Section Software List, 1999.

    ERIC Educational Resources Information Center

    Healey, Deborah, Ed.; Johnson, Norman, Ed.

    The bibliography is an annotated list of software for language learning and includes items in use by TESOL teachers and those marketed for bilingual and English-as-a-Second-Language (ESL) education. An introductory section describes the listings and their use, gives a brief history of the software list, a brief introduction to computer-assisted…

  1. Ga-67 uptake post cesarean section

    SciTech Connect

    Lopez, O.L.; Maisano, E.R.

    1984-02-01

    Gallium-67 distribution in normal patients is well known; it is also known that the concentration in some tissues may vary according to an individual physiologic stimulus. In this report, the case of a young woman is presented who was studied 15 days after a cesarean section and showed physiologic and pathologic Ga-67 accumulation.

  2. Cross-sectional structural parameters from densitometry

    NASA Technical Reports Server (NTRS)

    Cleek, Tammy M.; Whalen, Robert T.

    2002-01-01

    Bone densitometry has previously been used to obtain cross-sectional properties of bone from a single X-ray projection across the bone width. Using three unique projections, we have extended the method to obtain the principal area moments of inertia and orientations of the principal axes at each scan cross-section along the length of the scan. Various aluminum phantoms were used to examine scanner characteristics to develop the highest accuracy possible for in vitro non-invasive analysis of cross-sectional properties. Factors considered included X-ray photon energy, initial scan orientation, the angle spanned by the three scans (included angle), and I(min)/I(max) ratios. Principal moments of inertia were accurate to within +/-3.1% and principal angles were within +/-1 degrees of the expected value for phantoms scanned with included angles of 60 degrees and 90 degrees at the higher X-ray photon energy (140 kVp). Low standard deviations in the error (0.68-1.84%) also indicate high precision of calculated measurements with these included angles. Accuracy and precision decreased slightly when the included angle was reduced to 30 degrees. The method was then successfully applied to a pair of excised cadaveric tibiae. The accuracy and insensitivity of the algorithms to cross-sectional shape and changing isotropy (I(min)/I(max)) values when various included angles are used make this technique viable for future in vivo studies.

  3. Vacuum chamber for an undulator straight section

    SciTech Connect

    Kim, S.; Wehrle, R.; Genens, L.

    1987-01-01

    A prototype aluminum extruded vacuum chamber for an undulator straight section of the Advanced Photon Source is described. The 52.-m long vacuum system is designed so that the undulator gap variation does not interfere with it. The chamber is gripped in a stiff close toleranced mounting structure to insure dimensional tolerance of the chamber height.

  4. 29 CFR Section 1607.16 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... in hiring, promotion, or other employment decision which works to the disadvantage of members of a... procedure is predictive of or significantly correlated with important elements of work behavior. See sections 5B and 14B. G. Employer. Any employer subject to the provisions of the Civil Rights Act of...

  5. AAVSO Long-Period Variable Section Update

    NASA Astrophysics Data System (ADS)

    Hutton, Kate; Simonsen, Mike

    2009-05-01

    The first of the new AAVSO "sections" is the LPV section. This section has decided to "own" SR, L & RV stars, as well as Miras. There is an LPV Section Wiki, and there has been much discussion on the AAVSO discussion e-mail list regarding the type and number of stars that should be included in the AAVSO LPV Programs. One of our first major tasks is to produce a list of stars to recommend to observers, stars for which the observers can feel that their work will be of value in the present & future age of automated surveys. The core of the list is the AAVSO "legacy stars". The legacy stars will include those stars that have a long & rich history with the AAVSO (more than 15,000 AAVSO observations in 50+ years) and those that have been the subject of many scientific publications. The remaining LPV program stars will include those with at least 5,000 observations in the AAVSO International database, those too bright for most surveys, those that are in fields too crowded for the surveys, plus any that are specifically requested by researchers. The AAVSO Binocular Program will include stars with minima brighter than about 10th magnitude, visible in binoculars for the majority of their cycles.

  6. Section XI -- 25 years of development

    SciTech Connect

    Hedden, O.F.

    1996-12-01

    The original concept of nuclear power plant designers was that the higher standards of design and fabrication would make inservice inspections unnecessary, and little attention was given to provisions for access. By 1966 the Atomic Energy Commission recognized that a planned program of periodic inservice inspections would be needed. They began development of criteria, and encouraged industry code-writing organizations to do likewise. These groups joined forces in 1968, and their product was published by ASME in 1970 as part of the Boiler and Pressure Code, Section XI, Rules for Inservice Inspection of Nuclear Reactor Coolant Systems. Section XI, 24 pages in 1970, is now 723 pages. While it originally covered only light water reactor Class 1 components and piping, it now includes Class 2, 3, and containment, and liquid metal cooled reactor plants. Along the way, rules have been developed for gas-cooled and low pressure heavy water reactor plants. The growth in size of Section XI from its modest beginning has been largely because of recognition that the rules governing plant inspection/operation need to be considerably different from the rules provided for the component designer/manufacturer. Rules have been developed in the areas of repair/replacement technology, NDE methodology, NDE acceptance standards, and analytical evaluation methods in the absence of appropriate rules in Section III.

  7. Golden Section Relations in Interpersonal Judgment

    ERIC Educational Resources Information Center

    Benjafield, John; Green, T. R. G.

    1978-01-01

    A model of the organization of interpersonal judgments, based on the hypothesis that people tend to organize their judgments in Golden Section ratios, was presented. A theory of the process of interpersonal judgment, based on the notion that people judge acquaintances using a Fibonacci-like decision rule, was then developed. A computer simulation…

  8. Severe pelvic abscess formation following caesarean section.

    PubMed

    Muin, Dana A; Takes, Martin Thanh-Long; Hösli, Irene; Lapaire, Olav

    2015-01-01

    We report a case of a 24-year-old woman with severe pelvic abscess formation 2 weeks after secondary caesarean section. The isolated pathogens were a mixture of Gardnerella vaginalis, Mycoplasma hominis and Ureaplasma urealyticum. After initial resistance to systemic antibiotic treatment, she underwent radiologically-guided drainage of the abscesses, whereon she had a continuous recovery. PMID:25911355

  9. Neutron Capture Cross Sections for Radioactive Nuclei

    NASA Astrophysics Data System (ADS)

    Tonchev, Anton; Bedrossian, Peter; Escher, Jutta; Scielzo, Nicholas

    2015-10-01

    Accurate neutron-capture cross sections for radioactive nuclei near or far away from the line of beta stability are crucial for understanding the nucleosynthesis of heavy elements. However, neutron-capture cross sections for short-lived radionuclides are difficult to measure due to the fact that the measurements require both highly radioactive samples and intense neutron sources. Essential ingredients for describing the γ decays following neutron capture are the γ-ray strength function and level densities. We will compare different indirect approaches for obtaining observables that can constrain Hauser-Feshbach statistical model calculations of capture cross sections. Specifically, we will consider photon scattering, transfer reactions, and beta-delayed neutron emission. Challenges that exist on the path to obtaining neutron-capture cross sections for reactions on isotopes far from stability will be discussed. This work was performed under the auspices of US DOE by LLNL under contract DE-AC52-07NA27344. Funding was provided via the LDRD-ERD-069 project.

  10. Turbine Engine Hot Section Technology (HOST)

    NASA Technical Reports Server (NTRS)

    1982-01-01

    Research and plans concerning aircraft gas turbine engine hot section durability problems were discussed. Under the topics of structural analysis, fatigue and fracture, surface protective coatings, combustion, turbine heat transfer, and instrumentation specific points addressed were the thermal and fluid environment around liners, blades, and vanes, material coatings, constitutive behavior, stress-strain response, and life prediction methods for the three components.